C-and-C++/C2/Arithmetic-Operators/English - Revision history

Ashwini at 10:30, 5 February 2014

2014-02-05T10:30:34Z

Ashwini at 10:29, 5 February 2014

2014-02-05T10:29:30Z

Ashwini at 11:55, 31 January 2014

2014-01-31T11:55:46Z

Ashwini at 10:15, 30 January 2014

2014-01-30T10:15:12Z

Ashwini at 09:52, 30 January 2014

2014-01-30T09:52:14Z

Nancyvarkey at 10:33, 13 December 2013

2013-12-13T10:33:29Z

Ashwini: Created page with ''''Title of script''': Arithmetic Operators in C and C++ '''Author: Ritwik Joshi''' '''Keywords: Arithmetic Operators, Video Tutorial''' {| style="border-spacing:0;" | style…'

2013-05-03T07:00:01Z

Created page with ''''Title of script''': Arithmetic Operators in C and C++ '''Author: Ritwik Joshi''' '''Keywords: Arithmetic Operators, Video Tutorial''' {| style="border-spacing:0;" | style…'

New page

'''Title of script''': Arithmetic Operators in C and C++

'''Author: Ritwik Joshi'''

'''Keywords: Arithmetic Operators, Video Tutorial'''

{| style="border-spacing:0;"
| style="border-top:0.002cm solid #000000;border-bottom:0.002cm solid #000000;border-left:0.002cm solid #000000;border-right:none;padding:0.097cm;"| <center>'''Visual Cue'''</center>
| style="border:0.002cm solid #000000;padding:0.097cm;"| <center>'''Narration'''</center>

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| Slide 1
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Welcome to the spoken tutorial on '''Arithmetic Operators in C '''

'''C++'''.

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| Slide 2

| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| In this tutorial, we will learn:

Arithmetic operators

+ Addition: eg. a+b.

- Subtraction: eg. a-b.

/ Division: eg. a/b.

<nowiki>* </nowiki>Multiplication: eg. a*b.

% Modulus: eg. a%b.

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| Slide 3

| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| To record this tutorial, I am using:

'''Ubuntu 11.10''' as the operating system and

'''gcc''' and '''g++ Compiler version 4.6.1 in Ubuntu'''.

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"|
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| I will now demonstrate the use of these arithmetic operations with the help of a '''C''' program.

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| Switch to the file arithmetic.c in gedit
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| I have already written the program.

So I will open the editor and explain the code.

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| Highlight

'''int a,b;'''

'''float c;'''

'''a=5;'''

'''b=2;'''
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Here is the C program for arithmetic operators.

In the first four statements the variables are declared and defined.

In the next two statements,

'''a''' is assigned the value of 5.

'''b''' is assigned the value of 2.

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| Highlight

'''c=a+b;'''

| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Now let's see how the addition operator works.

'''c''' holds the sum of '''a''' and '''b'''.

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| Highlight

'''printf("Addition of a and '''

'''b is %.2f\n",c);'''
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| This '''printf''' statement displays the sum of a and b on the screen.

Here %.2f provides the precision of two digits after the decimal point.

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| Highlight

'''c=a*b;'''
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| In the next statement, '''c''' holds the product of '''a''' and '''b'''.

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| Highlight

'''printf("Multiplication of a and'''

'''b is %.2f\n",c);'''
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| This '''printf''' statement displays the product of a and b on the screen.

Let's see how these two operators work.

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| Type

'''/*'''

'''<nowiki>*/</nowiki>'''
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Now let us comment these lines

Type

'''/*'''

'''<nowiki>*/</nowiki>'''

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| Click on '''Save'''
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Click on '''Save''' to save the program.

Save the file with extension '''.c'''

I have saved the file as''' arithmetic.c'''

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| press '''Ctrl, Alt and T '''keys''' '''simultaneously.
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Open the terminal window by pressing '''Ctrl, Alt and T '''keys''' '''simultaneously.

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| Type

'''gcc incr.c -o incr'''

Type

'''./incr'''
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| To compile, type the following on the terminal

'''gcc arithmetic.c -o arith'''

'''Press Enter'''

To execute the code, type

'''./arith'''

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"|
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| press '''Enter'''

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| Output
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| The output is displayed on the screen.

It shows,

Sum of a and b is 7.00 and

Product of a and b is 10.00

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| Assignment
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Now you should try the subtraction operator on your own

Try replacing the addition operator with subtraction operator.

You should get the result as 3.

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| Switch back to the editor

Delete /* and */

| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Coming back to the program and the last set of statements.

Now, I will explain the code for division.

Remove the multi line comments from here and here.

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| Highlight

'''c=a/b; '''

| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| In these statements, '''c''' holds the value of integer division of '''a''' and '''b'''.

Please note that in integer division the fractional part is truncated.

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| Highlight

'''printf("Integer Division of a and b is %.2f\n", c);'''
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| The '''printf '''statement displays the division output on the screen.

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| Highlight

'''c=(float)a/b;'''
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| In this statement we are performing real division.

Here one of the operands has to be cast as '''float'''

The printf statement displays the output of real division on the screen.

For real division, one of the operands has to be cast as float.

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| Highlight

'''printf("Real Division of a and b'''

'''is %.2f\n",c);'''
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| We have type-cast variable a.

Now a will behave as a float varibale for a single operation.

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| return 0;

}''' '''
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Type '''return 0''' and close the ending curly bracket.

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| Click on '''Save'''
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Click on '''Save.'''

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| Switch back to the terminal.
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Coming back to the terminal to compile and execute the code.

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| Type

'''gcc incr.c -o incr'''

Type

'''./incr'''
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| To compile, type the following on the terminal

'''gcc arithmetic.c -o arith'''

To execute the code, type

'''./arith'''

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| Output
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| The output is displayed on the screen:

We have the previous outputs of addition and multiplication operators.

Addition of a and b is 7.00

Multiplication of a and b is 10.00

We have the Integer Division of 5 and 2 is 2.00

We can see that in integer division the fractional part is truncated.

Then we have the Real Division of 5 and 2 is 2.50

In real division the result is as expected.

We used type-casting to obtain these result.

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"|
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Now suppose, I want to write the same program in C++.

Let see can we use the same code in C++, too?

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| Switch back to the editor
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Let's find out.

Let me go back to the editor.

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| Click on the C++ file in the editor
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Here is a C++ file with the necessary code.

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| // Arithmetic Operators in C++

<nowiki>#include <iostream> </nowiki>

using namespace std;
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Notice that the header is different from the C file header.

'''namespace''' is also used here.

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| int main()

{

int a,b;

float c;

a=5;

b=2;

c=a+b;

<nowiki>cout <<"Addition of a and b is "</nowiki>

<nowiki><<c <<"\n"; </nowiki>

c=a*b;

<nowiki>cout <<"Multiplication of a and</nowiki>

<nowiki>b is " <<c <<"\n"; </nowiki>

c=a/b;

<nowiki>cout <<"Integer Division of a</nowiki>

<nowiki>and b is " <<c <<"\n"; </nowiki>

c=(float)a/b;

<nowiki>cout <<"Real Division of a and</nowiki>

<nowiki>b is " <<c <<"\n"; </nowiki>

return 0;

}
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Also, notice that the output statement in C++ is '''cout'''.

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"|
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| So, apart from these differences, the two codes are very similar.

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| Click on '''Save'''.

point to '''.cpp'''
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Click on '''Save'''.

Make sure the file is saved with the extension '''.cpp'''

I have saved my file as''' arithmetic.cpp'''

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| On the terminal type

'''g++ arithmetic.cpp -o arithmetic'''
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Let's execute the code and seewhat results we get.

Open the terminal and type

'''g++ arithmetic.cpp -o arith'''

'''Press Enter'''

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| On the terminal type

'''./ arithmetic'''
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Let's execute this code and see what results we get.

Type

'''./ arith'''

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"|
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Here the output is displayed:

Addition of a and b is 7.00

Multiplication of a and b is 10.00

Integer Division of a and b is 2.00

Real Division of a and b is 2.50

So, we see that the results are identical.

The only difference is in the precisions of outputs.

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| Summary:
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Let us now summarize the tutorial.

In this tutorial we learnt how to use the arithmetic operators.

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| Assignment:
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| As an assignment:

Write a program to demonstrate the use of modulus operator.

Please note that Modulus operator finds the remainder of division.

eg. c = a % b;

You should obtain the result as 1.

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| Slide 4

'''About the Spoken Tutorial Project'''

* Watch the video available at [http://spoken-tutorial.org/What_is_a_Spoken_Tutorial http://spoken-tutorial.org/What_is_a_Spoken_Tutorial]

* It summarises the Spoken Tutorial project

* If you do not have good bandwidth, you can download and watch it

| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| * Watch the video available at the following link

* It summarises the Spoken Tutorial project

* If you do not have good bandwidth, you can download and watch it

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| Slide 5

'''Spoken Tutorial Workshops'''

The Spoken Tutorial Project Team

* Conducts workshops using spoken tutorials

* Gives certificates for those who pass an online test

* For more details, please write to contact@spoken-tutorial.org

| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| The Spoken Tutorial Project Team * Conducts workshops using spoken tutorials

* Gives certificates for those who pass an online test

* For more details, please write to contact at spoken hyphen tutorial dot org

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| Slide 6

'''Acknowledgement'''

* Spoken Tutorial Project is a part of the Talk to a Teacher project
* It is supported by the National Mission on Education through ICT, MHRD, Government of India
* More information on this Mission is available at
* [http://spoken-tutorial.org/NMEICT-Intro http://spoken-tutorial.org/NMEICT-Intro]

| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Spoken Tutorial Project is a part of the Talk to a Teacher project
* It is supported by the National Mission on Education through ICT, MHRD, Government of India <br/> More information on this Mission is available at
* spoken hyphen tutorial dot org slash NMEICT hyphen Intro

|-
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| Remain on previous slide

No slide for this part
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| This is Ritwik Joshi from IIT Bombay.

Thank you for joining.

|}

← Older revision		Revision as of 10:30, 5 February 2014
Line 265:		Line 265:

	'''gcc space arithmetic.c space -o space arith'''		'''gcc space arithmetic.c space -o space arith'''
		+
	'''Press Enter'''		'''Press Enter'''

@@ Line 146: / Line 146: @@
-'''gcc space arithmetic.c space -o  arith'''
+'''gcc space arithmetic.c space -o  space arith'''
 Type
@@ Line 152: / Line 152: @@
 | style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| To compile the code, type the following on the terminal
-'''gcc space arithmetic.c space -o  arith'''
+'''gcc space arithmetic.c space -o space arith'''
 '''Press Enter'''

@@ Line 395: / Line 395: @@
 | style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Here the output is displayed.
-So, we see that the results are identical.
+So, we see that the results are similar to the C program.
 The only difference is in the precisions of outputs.

@@ Line 33: / Line 33: @@
 <nowiki>* </nowiki>Multiplication: eg. a*b.
-And
+and
 % Modulus: eg. a%b.
@@ Line 75: / Line 75: @@
 '''a''' is assigned the value of 5.
+and
 '''b''' is assigned the value of 2.
@@ Line 122: / Line 122: @@
 '''<nowiki>*/</nowiki>'''
-| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| We will comment the following lines
+| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| We will comment out the following lines
 Type
@@ Line 146: / Line 146: @@
-'''gcc incr.c -o incr'''
+'''gcc space arithmetic.c space -o  arith'''
 Type
+'''./arith'''
-'''./incr'''
 | style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| To compile the code, type the following on the terminal
@@ Line 171: / Line 170: @@
 It shows,
-'''Sum of a and b is 7.00'''
+'''Sum of 5 and 2 is 7.00'''
 and
-'''Product of a and b is 10.00'''
+'''Product of 5 and 2 is 10.00'''
 |-
@@ Line 197: / Line 196: @@
 Now, I will explain the code for division.
-Remove the multi line comments from here and here.
+Remove the multi line comments here and here.
 |-
@@ Line 239: / Line 238: @@
 '''printf"
 | style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| The''' printf statement''' displays the output of real division on the screen.
 |-
@@ Line 251: / Line 247: @@
 |-
 | style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| Click on '''Save'''
-| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Click on '''Save.'''
+| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Now Click on '''Save.'''
 |-
@@ Line 261: / Line 257: @@
-'''gcc incr.c -o incr'''
+'''gcc arithmetic.c -o arith'''
 Type
-'''./incr'''
+'''./arith'''
-| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| To compile, type the following on the terminal
+| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| To compile, type
-'''gcc arithmetic.c -o arith'''
+'''gcc space arithmetic.c space -o space arith'''
 To execute the code, type
 '''./arith'''
 |-
@@ Line 280: / Line 278: @@
 We have the previous outputs of addition and multiplication operators.
-We have '''Integer Division of 5 and 2 is 2.00'''
+We have the '''Integer Division of 5 by 2 is 2.00'''
 We can see that in integer division the fractional part is truncated.
-Then we have  '''Real Division of 5 and 2 is 2.50'''
+Then we have the '''Real Division of 5 and 2 is 2.50'''
 In real division the result is as expected.
@@ Line 294: / Line 292: @@
 | style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Now suppose, I want to write the same program in C++.
-Let see can we use the same code in C++, too.
+Let see if I can use the same code in C++, too.
 |-
@@ Line 380: / Line 378: @@
 Open the '''terminal''' and type
-'''g++ arithmetic.cpp -o arith'''
+'''g++ space arithmetic.cpp space -o space arith'''
 Press '''Enter'''.
@@ Line 390: / Line 388: @@
 | style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| To execute the code, type
-'''./ arith'''
+'''./arith'''
 |-
@@ Line 423: / Line 422: @@
 '''About the Spoken Tutorial Project'''
-* Watch the video available at [http://spoken-tutorial.org/What_is_a_Spoken_Tutorial http://spoken-tutorial.org/What_is_a_Spoken_Tutorial]
+* Watch the video available at the following link [http://spoken-tutorial.org/What_is_a_Spoken_Tutorial http://spoken-tutorial.org/What_is_a_Spoken_Tutorial]
 * It summarises the Spoken Tutorial project

@@ Line 13: / Line 13: @@
 |-
 | style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| Slide 1
-| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Welcome to the spoken tutorial on '''Arithmetic Operators in C '''
+| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Welcome to the spoken tutorial on '''Arithmetic Operators in C ''' and
 '''C++'''.
@@ Line 24: / Line 24: @@
 | style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| In this tutorial, we will learn:
-Arithmetic operators
+Arithmetic operators like
 + Addition: eg. a+b.
@@ Line 33: / Line 33: @@
 <nowiki>* </nowiki>Multiplication: eg. a*b.
 % Modulus: eg. a%b.
@@ Line 96: / Line 97: @@
 | style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| This '''printf''' statement displays the sum of a and b on the screen.
-Here %.2f provides the precision of two digits after the decimal point.
+Here %.2f provides a precision of two digits after the decimal point.
 |-
@@ Line 121: / Line 122: @@
 '''<nowiki>*/</nowiki>'''
-| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Now let us comment the following lines
+| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| We will comment the following lines
 Type
@@ Line 131: / Line 132: @@
 |-
 | style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| Click on '''Save'''
-| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Click on '''Save''' to save the program.
+| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Click on '''Save'''
 Save the file with extension '''.c'''
-I have saved the file as''' arithmetic.c'''
+I have saved my file as''' arithmetic.c'''
 |-
@@ Line 150: / Line 151: @@
 '''./incr'''
-| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| To compile, type the following on the terminal
+| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| To compile the code, type the following on the terminal
-'''gcc arithmetic.c -o arith'''
+'''gcc space arithmetic.c space -o  arith'''
 '''Press Enter'''

@@ Line 69: / Line 69: @@
 | style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Here is the C program for arithmetic operators.
-In the first four statements the variables are declared and defined.
+In the first two statements the variables are declared and defined.
 In the next two statements,
@@ Line 121: / Line 121: @@
 '''<nowiki>*/</nowiki>'''
-| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Now let us comment these lines
+| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Now let us comment the following lines
 Type
@@ Line 170: / Line 170: @@
 It shows,
-Sum of a and b is 7.00 and
+'''Sum of a and b is 7.00'''
-Product of a and b is 10.00
+and
 |-
 | style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| Assignment
-| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Now you should try the subtraction operator on your own
+| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Now you should try the subtraction operator on your own.
 Try replacing the addition operator with subtraction operator.
@@ Line 203: / Line 205: @@
-| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| In these statements, '''c''' holds the value of integer division of '''a''' and '''b'''.
+| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| In these statements, '''c''' holds the value of integer division of '''a''' by '''b'''.
 Please note that in integer division the fractional part is truncated.
@@ Line 219: / Line 221: @@
 | style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| In this statement we are performing real division.
-Here one of the operands has to be cast as '''float'''
+Here one of the operands has to be cast as '''float'''.
-−
-The printf statement displays the output of real division on the screen.
-−
-For real division, one of the operands has to be cast as float.
 |-
@@ Line 231: / Line 229: @@
 '''is %.2f\n",c);'''
-| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| We have type-cast variable a.
+| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| We have type-cast variable''' a'''.
 |-
@@ Line 272: / Line 279: @@
 We have the previous outputs of addition and multiplication operators.
-Addition of a and b is 7.00
+We have '''Integer Division of 5 and 2 is 2.00'''
-−
-Multiplication of a and b is 10.00
-−
-We have the Integer Division of 5 and 2 is 2.00
 We can see that in integer division the fractional part is truncated.
-Then we have the Real Division of 5 and 2 is 2.50
+Then we have  '''Real Division of 5 and 2 is 2.50'''
 In real division the result is as expected.
@@ Line 290: / Line 293: @@
 | style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Now suppose, I want to write the same program in C++.
-Let see can we use the same code in C++, too?
+Let see can we use the same code in C++, too.
 |-
@@ Line 300: / Line 303: @@
 |-
 | style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"| Click on the C++ file in the editor
-| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Here is a C++ file with the necessary code.
+| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Here we have the C++ code.
 |-
@@ Line 372: / Line 375: @@
 '''g++ arithmetic.cpp -o arithmetic'''
-| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Let's execute the code and seewhat results we get.
+| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Let's execute the code and see what results we get.
-Open the terminal and type
+Open the '''terminal''' and type
 '''g++ arithmetic.cpp -o arith'''
-'''Press Enter'''
+Press '''Enter'''.
 |-
@@ Line 384: / Line 387: @@
 '''./ arithmetic'''
-| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Let's execute this code and see what results we get.
+| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| To execute the code, type
-−
-Type
 '''./ arith'''
@@ Line 392: / Line 393: @@
 |-
 | style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:none;padding:0.097cm;"|
-| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Here the output is displayed:
+| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Here the output is displayed.
-−
-Addition of a and b is 7.00
-−
-Multiplication of a and b is 10.00
-−
-Integer Division of a and b is 2.00
-−
-Real Division of a and b is 2.50
 So, we see that the results are identical.