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

Ashwini at 10:27, 5 February 2014

2014-02-05T10:27:57Z

Ashwini at 10:30, 30 January 2014

2014-01-30T10:30:08Z

Nancyvarkey at 11:32, 13 December 2013

2013-12-13T11:32:17Z

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

2013-05-03T07:07:06Z

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

New page

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

'''Author: Ritwik Joshi'''

'''Keywords: Relational 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 '''Relational Operators''' in '''C''' and '''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 about:

Relational operators like

Less than: eg. <nowiki>a < b</nowiki>

Greater than: eg. a > b

Less than or equal to: eg. <nowiki>a <= b</nowiki>

Greater than or equal to: eg. a >= b

Equal to: eg. a == b

Not equal to: 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;"| Now I will demonstrate the use of these operators using a '''C '''program.

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

Return values:

0 when '''False'''

1 when''' True'''
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Let us begin with an introduction.

Relational operators are used to compare integer and floating point numbers.

Expressions using relational operators '''return''' 0 for false and 1 for true.

'''Return''' values:

0 when '''False'''

1 when''' True'''

|-
| 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 I will demonstrate the relational operators 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 '''relational.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 made the program.

So, I'll 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; '''
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| First, we declare two variables '''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("Enter the values of a and b\n"); '''
| 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 prompts the user to enter the values 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

'''scanf("%d %d",&a,&b); '''
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| This '''scanf '''statement takes input for the variables '''a '''and '''b'''.

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

'''if(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 we have the '''greater than''' operator.

This operator compares the two operands on either side of the operator.

It '''returns''' '''true''' if '''a''' is greater than '''b'''.

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

'''printf("%d is greater than %d \n",a,b); '''
| 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 is executed if the above condition is true.

If the above condition is '''false '''then this '''printf''' statement is skipped.

The control then jumps to the next statement.

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

'''<nowiki>else if(a < b) </nowiki>'''
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| We now have the '''less than''' operator.

This too compares the operands.

It '''returns''' '''true''' when '''a''' is less than '''b'''.

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

'''printf("%d is less than %d \n",a,b); '''
| 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 is executed if the above condition is '''true.'''

It is skipped otherwise.

|-
| 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;"| Let's execute the code till here.

First comment out 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'''.

I have saved my file as relational.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 relational.c -o rel'''

Type

'''./rel'''
| 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 relational.c -o rel'''

Press '''Enter'''.

To execute the code, type

'''./rel'''

Press '''Enter'''.

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

'''8 is greater than 3'''.
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Enter the values of a and b

I enter '''a''' as 8 and '''b '''as 3.

The output is:

8 is greater than 3.

You can try executing this code with different values of '''a '''and '''b'''.

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

/*

Retype

/*
| 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 rest of the code.

Let us now remove the comment from here.

I'll put the comment here.

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

'''<nowiki>if(a <= b)</nowiki>'''
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Now we have the '''less than or equal to '''operator.

This operator compares the two operands on either side of the operator.

It '''returns''' '''true''' if '''a''' is less than or equal to '''b'''.

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

'''printf("%d is less than or equal to %d \n",a,b);'''
| 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 is executed if the above condition is true.

If the above condition is '''false '''then it is skipped.

The control then jumps to the next statement.

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

'''else if(a >= b)'''
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Next comes the '''greater than or equal to '''operator.

It compares '''a '''and '''b '''and '''returns''' '''true''' if '''a''' is greater than or equal to '''b'''.

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

'''printf("%d is greater than or equal to %d \n",a,b);'''
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| If the condition is true then this printf statement will be executed.

|-
| 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;"| Now let's execute the code till here.

Click on '''Save'''.

Switch back to the terminal.

Compile and execute as before.

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

'''8 is greater than or equal to 3'''
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Enter the values of a and b

I enter '''a''' as 8 and '''b '''as 3.

The output is displayed:

8 is greater than or equal to 3

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

/*

<nowiki>*/</nowiki>
| 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 rest of the code.

Delete the multiline comments.

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

'''if(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 we have the '''equal to '''operator.

It is denoted by double '''equal (==) '''signs.

This operator '''returns''' '''true''' when both operands are equal to one another.

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

'''printf("%d is equal to %d \n",a,b);'''
| 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 executes when '''a''' is equal to '''b.'''

If not, the control then jumps on to the next statement.

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

'''else if (a != b)'''
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Similarly, we have the '''not equal to''' operator.

This operator '''returns true''' when the operands are not equal to one another.

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

'''printf("%d is not equal to %d \n”,a,b);'''
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| This '''printf''' statment will execute when '''a''' is not equal to '''b'''.

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

'''return 0;'''

'''}'''
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Coming to the end of the program.

'''Return 0;'''

|-
| 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;"| Switch back to the terminal.

Compile and execute as before.

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

'''8 is not equal to 3'''
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Enter the values of a and b

Enter '''a''' as 8 and '''b '''as 3.

The output is displayed on the screen:

8 is greater than 3

8 is greater than or equal to 3

8 is not equal to 3

So, we see how the relational operaotors work.

Try executing this code with different set of inputs.

|-
| 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, writing a smilar program in '''C++''' is quite easy.

There are a few differences in the syntax.

I have already made the code in '''C++'''.

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

//Relational Operators in C++

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

using namespace std;

int main()

{

int a, b;

<nowiki>cout <<"Enter the values of a and b \n"; </nowiki>

cin >>a >>b;

if(a > b)

<nowiki>cout <<a <<" is greater than " <

<nowiki>else if(a < b) </nowiki>

<nowiki>cout <<a <<" is less than </nowiki><nowiki>" <

<nowiki>if(a <= b) </nowiki>

<nowiki>cout <<a <<" is less than or equal to " <

if(a >= b)

<nowiki>cout <<a <<" is greater than or equal to " <

if(a == b)

<nowiki>cout <<a <<" is equal to " <

else if (a != b)

<nowiki>cout <<a <<" is not equal to "<

return 0;

}
| 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 code for '''relational operators''' in '''C++'''.

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

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

'''using namespace std;'''

'''cout'''
| 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.

Also we have the '''using '''statement here.

The output statement in C++ is '''cout'''.

And the input statement in C++ is''' cin.'''

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;"|
| 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.

Please make sure the file is saved with the extension '''.cpp'''

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

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

'''g++ relational.cpp -o rel'''

'''./rel'''
| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Let's compile the code.

Open the terminal and type

'''g++ relational.cpp -o rel1'''

Let's execute this code and see what results we get.

Type

'''./ rel1'''

|-
| 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;"| Enter the values of a and b

I enter '''a''' as 8 and '''b '''as 3.

The output is displayed:

8 is greater than 3

8 is greater than or equal to 3

8 is not equal to 3

We see that the output is same as in the '''C''' code.

|-
| 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 let us see an error which we can come across.

Come back to our program

|-
| 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;"| Suppose here we replace the double equal to sign with the single equal to.

|-
| 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;"| Click on '''Save.'''

Come back to out terminal.

Compile and execute as before.

|-
| 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 we see it is showing 3 is equal to 3.

Come back to our program

This is because here we have an assignment operator.

So value of b is assigned to a.

|-
| 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;"| Let us fix the error.

Type an equal to sign.

Click on '''Save'''

|-
| 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;"| Switch back to our terminal

Let us compile and execute as before.

The output is now correct.

|-
| 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's summarize the tutorial.

In this tutorial, we learnt

Relational operators like

Less than: <nowiki>eg. a <b</nowiki>

Greater than: eg. a>b

Less than or equal to: <nowiki>eg. a<=b</nowiki>

Greater than or equal to: eg. a>=b

Equal to: eg. a==b

Not equal to: eg. a!=b

|-
| 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 that takes the marks of three students as input.

Compare the marks to see which student has scored the highest.

Check also if two or more students have scored equal marks.

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

'''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 6

'''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 7

'''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 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.

|}

@@ Line 34: / Line 34: @@
 Equal to: eg. a == b
-Not equal to: eg. a != b
+And Not equal to: eg. a != b
 |-
@@ Line 45: / Line 45: @@
 *'''Ubuntu 11.10''' as the operating system and
-*'''gcc''' and '''g++ Compiler '''version '''4.6.1 '''in '''Ubuntu.'''
+*'''gcc''' and '''g++ Compiler '''version '''4.6.1 '''on '''Ubuntu.'''
 |-
@@ Line 85: / Line 85: @@
 '''printf("Enter the values of a and b\n"); '''
 | 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 prompts the user to enter the values of a and b.
@@ Line 146: / Line 144: @@
 | 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 till here.
-First comment out these lines.
+First comment out the following.
 Type /* <nowiki>*/</nowiki>''' '''
@@ Line 170: / Line 168: @@
 | 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 relational.c -o rel'''
+'''gcc space relational.c space -o space rel'''
 Press '''Enter'''.
@@ Line 186: / Line 184: @@
 | style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| I enter '''a''' as 8 and '''b '''as 3.
-The output is: '''8 is greater than 3.'''
+The output is displayed: '''8 is greater than 3.'''
 You can try executing this code with different values of '''a '''and '''b'''.
@@ Line 211: / Line 209: @@
 This operator compares the two operands on either side of the operator.
-It '''returns''' '''true''' if '''a''' is less than or equal to '''b'''.
+It '''returns''' '''true''' if '''a''' is less than or equal to '''2'''.
 |-
@@ Line 267: / Line 265: @@
 <nowiki>*/</nowiki>
-| 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 rest of the code.
+| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"|Now coming back to rest of the code.
 Delete the multiline comments from here and here.
@@ Line 276: / Line 274: @@
 '''if(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 we have the '''equal to '''operator.
+| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| We now have the '''equal to '''operator.
 It is denoted by double '''equal (==) '''signs.
@@ Line 336: / Line 334: @@
 The output is displayed on the screen:
-'''8 is greater than 3'''
+'''8 is not equal to 3'''
 So, we see how the relational operators work.
@@ Line 423: / Line 421: @@
 | 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'''.
-Please make sure the file is saved with the extension '''.cpp'''
+Please make sure the file is saved with extension '''.cpp'''
 I have saved my file as '''relational.cpp'''
@@ Line 439: / Line 437: @@
 Open the '''terminal''' and type
-'''g++ relational.cpp -o rel1'''
+'''g++ relational.cpp space -o space rel1'''
 To execute, type
 '''./ rel1'''
 |-
@@ Line 451: / Line 450: @@
 The output is displayed.
-We see that the output is same as in the '''C''' program.
+We see that the output is same as the one in '''C''' program.
 |-
@@ Line 483: / Line 482: @@
 |-
 | 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;"| Let us fix the error.
+| 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 fix the error.
 Type an '''equal to''' sign.
@@ Line 491: / Line 490: @@
 |-
 | 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;"| Switch back to our terminal
+| style="border-top:none;border-bottom:1pt solid #000000;border-left:1pt solid #000000;border-right:1pt solid #000000;padding:0.097cm;"| Switch back to the terminal
-Let us compile and execute as before.
+Compile and execute as before.
 The output is now correct.
@@ Line 499: / Line 498: @@
 |-
 | 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's summarize the tutorial.
+| 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