Advanced-C++/C2/Function-Overloading-And-Overriding/English-timed - Revision history

Pratik kamble at 09:19, 23 March 2017

2017-03-23T09:19:07Z

Sandhya.np14 at 17:17, 28 June 2015

2015-06-28T17:17:38Z

Sandhya.np14 at 17:13, 28 June 2015

2015-06-28T17:13:25Z

Sandhya.np14 at 15:57, 28 June 2015

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PoojaMoolya at 10:42, 27 October 2014

2014-10-27T10:42:43Z

PoojaMoolya at 04:56, 13 October 2014

2014-10-13T04:56:25Z

Ranjana at 07:27, 21 August 2014

2014-08-21T07:27:58Z

Ranjana at 07:25, 21 August 2014

2014-08-21T07:25:06Z

PoojaMoolya at 05:56, 16 July 2014

2014-07-16T05:56:53Z

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Gaurav: Created page with ' {| border=1 | '''Time''' | '''Narration''' |- |00:01 | Welcome to the spoken tutorial on '''function Overloading''' in '''C++.''' |- |00:09 | In this tutorial, we will learn,…'

2014-07-16T05:32:23Z

Created page with ' {| border=1 | '''Time''' | '''Narration''' |- |00:01 | Welcome to the spoken tutorial on '''function Overloading''' in '''C++.''' |- |00:09 | In this tutorial, we will learn,…'

New page

{| border=1
| '''Time'''
| '''Narration'''

|-
|00:01
| Welcome to the spoken tutorial on '''function Overloading''' in '''C++.'''

|-
|00:09
| In this tutorial, we will learn,

|-
|00:11
|'''Function Overloading.'''

|-
|00:12
|'''Function Overriding.'''

|-
|00:14
|We will do this with the help of examples.

|-
|00:18
| To record this tutorial, I am using

|-
|00:21
|'''Ubuntu OS '''version 11.10

|-
|00:26
|'''g++ compiler '''v. 4.6.1

|-
|00:30
|'''Let us start with an introduction to function overloading.'''

|-
|00:34
|'''Function Overloading''' means two or more '''functions''' can have same name.

|-
|00:41
|The number of '''arguments''' and the '''data-type''' of the '''arguments''' will be different.

|-
|00:47
|When a '''function''' is called it is selected based on the argument list.

|-
|00:53
|Let us look at an example.

|-
|00:56
|In this program we will perform addition operation.

|-
|00:59
|I have already typed the code on the editor.

|-
|01:03
|Note that I have saved the file with the name '''overload.cpp'''

|-
|01:08
|Let me explain the code.

|-
|01:10
|This is our '''header file iostream.'''

|-
|01:13
|Here we are using the std namespace.

|-
|01:17
|Then we have '''add''' function defined as '''int.'''

|-
|01:21
|In this we have passed three arguments.

|-
|01:24
|'''Int a, int b and int c;'''

|-
|01:28
|'''Then we perform addition of three numbers.''' '''And we return the value.'''

|-
|01:33
|Here we overload the function '''add.'''

|-
|01:36
|It is declared as''' float.'''

|-
|01:38
|We pass two arguments '''float d''' '''float e'''

|-
|01:44
|Then we perform the addition operation on two numbers.

|-
|01:48
|This is our '''main''' function.

|-
|01:50
|In''' function''' '''main '''we declare the '''add''' '''function''' with different '''arguments'''.

|-
|01:56
|Then we declare the '''variables'''.

|-
|01:58
|'''Here we accept integer values from the user.'''

|-
|02:03
|Then we call the function '''add '''with three''' '''arguments.

|-
|02:07
|And store the''' '''result in variable''' sum.'''

|-
|02:09
|Here we print the result.

|-
|02:12
|Now here we accept floating point numbers from the user.

|-
|02:17
|Then we call the add function with two arguments.

|-
|02:21
|And here we print the '''sum'''.

|-
|02:23
|And this is our return statement

|-
|02:26
|Now let us execute the program

|-
|02:29
|Open the terminal by pressing '''Ctrl, Alt and T '''keys simultaneously on your keyboard.

|-
|02:38
|To execute type: '''g++ overload dot cpp space hyphen o ovr'''

|-
|02:49
|'''Press Enter'''

|-
|02:51
|Type '''dot slash ovr'''

|-
|02:53
|'''Press Enter'''

|-
|02:55
|It is displayed '''Enter three integers'''

|-
|02:58
|I will enter as:
'''10''', '''25''' and '''48'''

|-
|03:04
|The output is displayed as:
'''Sum of integers is 83'''

|-
|03:09
|Now we see:
'''Enter two floating point numbers'''

|-
|03:13
|I will enter as:
'''4.5''' and '''8.9'''
|-
|03:17
|'''Press Enter'''

|-
|03:19
|The output is displayed as:
'''Sum of floating point numbers is 13.4'''

|-
|03:25
|Now we will see '''function overriding'''.

|-
|03:29
|Let us switch back to our slides.

|-
|03:31
|Redefining a '''base class''' '''function''' in the derived class.

|-
|03:36
|The derived '''class function''' overrides the base class function.

|-
|03:40
|But the '''arguments''' passed are same.

|-
|03:44
|And the return-type is also same.

|-
|03:47
|Let us see an example on '''Function Overriding'''

|-
|03:49
|'''Here is an example on function Overriding'''

|-
|03:53
|'''Note that our filename is override.cpp.'''

|-
|03:57
|Let us go through the code.

|-
|04:00
|This is our header file.

|-
|04:03
|Here we have the''' std namespace.'''

|-
|04:06
|Then we have '''class arithmetic.'''

|-
|04:09
|In this we have declared integer variables''' '''as''' protected.'''

|-
|04:13
|Then we have '''function values''' declared as '''public'''.

|-
|04:18
|In these we have passed two arguments '''int x''' and '''int y'''.

|-
|04:23
|Then we stored the value in '''a''' and '''b'''.

|-
|04:26
|Here we have '''virtual function''' as '''operations.'''

|-
|04:30
|In this we add the two numbers and print the sum.

|-
|04:34
|Here we close the class.

|-
|04:37
|Now we have '''class Subtract''' as '''derived class.'''

|-
|04:41
|This inherits the''' base class arithmetic.'''

|-
|04:45
|In this we calculate the difference of two numbers and we print the difference.

|-
|04:50
|Now we have another '''derived class''' as '''Multiply.'''

|-
|04:54
|This also inherits''' base class arithmetic.'''

|-
|04:57
|In this we calculate the product of two''' '''numbers and display the product.

|-
|05:03
|Then we have '''class Divide '''this also''' '''inherits the''' base class arithmetic.'''

|-
|05:09
|In this we calculate the division of two numbers and then we display the division.

|-
|05:15
|Note that the return type of the function is same and the arguments passed are also the same.

|-
|05:23
|Now this is our '''main function.'''

|-
|05:26
|In this we create an''' object '''of''' class arithmetic as p.'''

|-
|05:31
|'''arith '''is the pointer to the''' class arithmetic.'''

|-
|05:35
|Then we have''' subt object '''of''' class Subtract.'''

|-
|05:39
|'''mult object '''of''' class Multiply.'''

|-
|05:42
|And''' divd object '''of''' class Divide.'''

|-
|05:46
|'''Here, p''' is set to the address of '''arith.Or arith is set to the address of p?

|-
|05:50
|Then we pass''' arguments '''as''' 30 '''and''' 12 '''in''' function values.'''

|-
|05:56
|Now we call''' the function operations.'''

|-
|05:59
|This will perform the addition operation.

|-
|06:02
|Here we set '''subt''' to the address of '''arith.'''

|-
|06:07
|And we pass''' 42 '''and''' 5 '''as''' arguments.'''

|-
|06:11
|Again we call''' function operations.'''

|-
|06:14
|This will perform subtraction of two numbers.

|-
|06:18
|Now we set '''mult''' to the address of '''arith.'''

|-
|06:22
|And pass''' arguments '''as''' 6 '''and''' 5.'''

|-
|06:26
|We call '''function operations.'''

|-
|06:29
|This will perform multiplication of two numbers.

|-
|06:33
|Atlast we set '''divd''' to the address of '''arith''' And we pass '''6''' and '''3''' as '''arguments.'''

|-
|06:41
|Now we''' call function operations.'''

|-
|06:44
|This will perform division of two numbers.

|-
|06:48
|And this is our '''return statement.'''

|-
|06:50
|Let us execute the program. Switch back to our terminal.

|-
|06:54
|Type:
'''g++ space override dot cpp hyphen o space over2'''

|-
|07:04
|'''Press Enter'''

|-
|07:06
|Type:
dot slash over2'''

|-
|07:09
|'''Press Enter'''

|-
|07:11
|The output is displayed as:

|-
|07:13
|'''Addition of two numbers is 42'''

|-
|07:16
|'''Difference of two numbers is 37'''

|-
|07:19
|'''Product of two numbers is 30''' and '''Division of two numbers is 2'''

|-
|07:25
|Let us switch back to our slides.

|-
|07:27
|Let us see the difference of '''overloading''' and '''overriding'''.

|-
|07:31
|'''Overloading''' can occurs without inheritance.

|-
|07:35
|'''Overriding''' occurs when one class is inherited from another.

|-
|07:41
|In '''overloading''' the arguments and the return-type must differ.

|-
|07:46
|In '''overriding''' the arguments and the return type must be same.

|-
|07:51
|In '''overloading''' the function name is same.

|-
|07:55
|But it behaves differently depending on the arguments passed to them.

|-
|08:01
|In '''overriding''' the function name is same.

|-
|08:05
|'''Derived class '''function can perform different operations from the base class.

|-
|08:11
| Let us summarize:

|-
|08:13
|In this tutorial we have seen

|-
|08:15
|'''Function overloading.'''

|-
|08:16
|'''eg. int add with three different arguments.''' and

|-
|08:21
|'''float add with two different arguments.'''

|-
|08:24
|'''Function Overriding.'''

|-
|08:26
|'''eg. virtual int operations () and int operations ()'''

|-
|08:31
|functions with the same argument and same return type and

|-
|08:36
|'''Difference between both.'''

|-
|08:38
|As an assignment

|-
|08:39
|Write a program that will calculate the area of rectangle, square and circle

|-
|08:46
|Using function overloading.

|-
|08:48
|Watch the video available at the link shown below

|-
|08:52
|It summarizes the Spoken Tutorial project

|-
|08:55
|If you do not have good bandwidth, you can download and watch it

|-
|08:59
|The Spoken Tutorial Project Team

|-
|09:02
|Conducts workshops using spoken tutorials

|-
|09:05
|Gives certificates to those who pass an online test

|-
|09:09
|For more details, please write to,

|-
|09:12
|contact@spoken-tutorial.org

|-
|09:16
|Spoken Tutorial Project is a part of the Talk to a Teacher project

|-
|09:20
|It is supported by the National Mission on Education through ICT, MHRD, Government of India

|-
|09:27
|More information on this Mission is available at he link shown below

|-
| 09:32
| This is Ashwini Patil from IIT Bombay signing off

|-
|09:36
|Thank You for joining.

|}

@@ Line 13: / Line 13: @@
 |-
 |00:11
-|* '''Function Overloading'''
+|'''Function Overloading''' '''Function Overriding.'''
-−
-|-
-|00:12
-|* '''Function Overriding.'''
 |-
@@ Line 29: / Line 25: @@
 |-
 |00:21
-|* '''Ubuntu OS '''version '''11.10'''
+|'''Ubuntu OS '''version '''11.10'''
 |-
 |00:26
-|* '''g++ compiler '''version '''4.6.1'''
+|'''g++ compiler '''version '''4.6.1'''
 |-
@@ Line 497: / Line 493: @@
 |-
 |08:15
-| '''Function overloading'''-
+| '''Function overloading'''- eg. int add()''' with three different arguments  and
-−
-|-
-|08:16
-|'''eg. int add()''' with three different arguments  and
 |-
@@ Line 517: / Line 509: @@
 |-
 |08:31
-| Functions with the same '''argument''' and same '''return-type''' and difference between both.
+| Functions with the same '''argument''' and same '''return-type''' and difference between both.As an assignment.
-−
-|-
-|08:38
-|As an assignment:
 |-

@@ Line 517: / Line 517: @@
 |-
 |08:31
-|* Functions with the same '''argument''' and same '''return-type''' and difference between both.
+| Functions with the same '''argument''' and same '''return-type''' and difference between both.
 |-

@@ Line 5: / Line 5: @@
 |-
 |00:01
-| Welcome to the '''spoken tutorial''' on '''function Overloading and Overriding''' in '''C++.'''
+| Welcome to the '''spoken tutorial''' on '''Function Overloading and Overriding''' in '''C++.'''
 |-
@@ Line 93: / Line 93: @@
 |-
 |01:28
-|Then we perform addition of three numbers. And we '''return''' the '''value.'''
+|Then we perform addition of three numbers and we '''return''' the '''value.'''
 |-
@@ Line 117: / Line 117: @@
 |-
 |01:50
-|In function '''main()''', we declare the '''add()''' '''function''' with different '''arguments'''.
+|In function '''main()''', we declare the '''add()''' function with different '''arguments'''.
 |-
@@ Line 153: / Line 153: @@
 |-
 |02:23
-|And this is our '''return''' statement.
+| This is our '''return''' statement.
 |-
@@ Line 169: / Line 169: @@
 |-
 |02:49
-|Press '''Enter'''.
+|press '''Enter'''.
 |-
@@ Line 177: / Line 177: @@
 |-
 |02:53
-|Press '''Enter'''.
+|press '''Enter'''.
 |-
@@ Line 185: / Line 185: @@
 |-
 |02:58
-|I will enter   '''10''', '''25''' and '''48'''
+|I will enter   '''10''', '''25''' and '''48'''.
 |-
@@ Line 201: / Line 201: @@
 |-
 |03:17
-|Press '''Enter'''.
+|press '''Enter'''.
 |-
 |03:19
-|The '''output''' is displayed as: '''Sum of floating point numbers is 13.4'''
+|The '''output''' is displayed as:''' "Sum of floating point numbers is 13.4" '''.
 |-
@@ Line 241: / Line 241: @@
 |-
 |03:53
-|Note that our filename is '''override.cpp.'''
+|Note that our file name is '''override.cpp.'''
 |-
@@ Line 265: / Line 265: @@
 |-
 |04:14
-|Then we have '''function values''' declared as '''public'''.
+|Then we have function '''values()''' declared as '''public'''.
 |-
 |04:18
-|In these, we have passed two '''arguments'''- '''int x''' and '''int y'''.
+|In this, we have passed two '''arguments'''- '''int x''' and '''int y'''.
 |-
 |04:23
-|Then we stored the value in '''a''' and '''b'''.
+|Then we stored the values in '''a''' and '''b'''.
 |-
 |04:26
-|Here we have '''virtual function''' as '''operations.'''
+|Here we have '''virtual function''' as '''operations().'''
 |-
@@ Line 321: / Line 321: @@
 |-
 |05:15
-|Note that the '''return type''' of the function is same and the arguments passed are also  same.
+|Note that the '''return-type''' of the function is same and the '''arguments''' passed are also  same.
 |-
@@ Line 389: / Line 389: @@
 |-
 |06:26
-|We call '''function operations().'''
+|We call the '''function operations().'''
 |-
 |06:29
-|This will perform multiplication of two numbers.
+|This will perform the multiplication of two numbers.
 |-
@@ Line 401: / Line 401: @@
 |-
 |06:41
-|Now we call '''operations()''' function.
+|Now we call the '''operations()''' function.
 |-
 |06:44
-|This will perform division of two numbers.
+|This will perform the division of two numbers.
 |-
 |06:48
-|And this is our '''return statement.'''
+|And this is our '''return''' statement.
 |-
 |06:50
-|Let us '''execute''' the program. Switch back to our '''terminal'''.
+|Let us '''execute''' the program. Switch back to the '''terminal'''.
 |-
@@ Line 421: / Line 421: @@
 |-
 |07:04
-|Press '''Enter'''.
+|press '''Enter'''.
 |-
@@ Line 429: / Line 429: @@
 |-
 |07:09
-|Press '''Enter'''.
+|press '''Enter'''.
 |-
@@ Line 497: / Line 497: @@
 |-
 |08:15
-|* '''Function overloading'''
+| '''Function overloading'''-
 |-
 |08:16
-|'''eg. int add''' with three different arguments  and
+|'''eg. int add()''' with three different arguments  and
 |-
 |08:21
-|'''float add''' with two different arguments.
+|'''float add()''' with two different arguments.
 |-
 |08:24
-|* '''Function Overriding'''
+|Then '''Function Overriding'''-
 |-
 |08:26
-|'''eg. virtual int operations ()''' and '''int operations ()'''
+|'''eg. virtual int operations()''' and '''int operations()'''
 |-
 |08:31
-|* Functions with the same argument and same return-type and difference between both.
+|* Functions with the same '''argument''' and same '''return-type''' and difference between both.
 |-
@@ Line 537: / Line 537: @@
 |-
 |08:52
-|It summarizes the Spoken Tutorial project.
+|It summarizes the Spoken-Tutorial project.
 |-
@@ Line 545: / Line 545: @@
 |-
 |08:59
-|The Spoken Tutorial Project Team:
+|The Spoken Tutorial Project team:
 |-

@@ Line 261: / Line 261: @@
 |-
 |04:09
-|In this we have declared integer variablesas  as '''protected.'''
+|In this we have declared integer variables as  as '''protected.'''
 |-
@@ Line 317: / Line 317: @@
 |-
 |05:09
-|In this we calculate the division of two numbers and then we display the division.
+|In this we calculate the division of two numbers and  we display the division.
 |-
@@ Line 325: / Line 325: @@
 |-
 |05:23
-|Now this is our '''main function.'''
+|This is our '''main function.'''
 |-
@@ Line 345: / Line 345: @@
 |-
 |05:42
-|And''' divd object '''of''' class Divide.'''
+|And''' divd object ''' of ''' class Divide.'''
 |-
@@ Line 429: / Line 429: @@
 |-
 |07:09
-|'''Press Enter'''
+|Press '''Enter'''
 |-
@@ Line 513: / Line 513: @@
 |-
 |08:26
-|'''eg. virtual int operations () and int operations ()'''
+|'''eg. virtual int operations ()''' and '''int operations ()'''
 |-
@@ Line 529: / Line 529: @@
 |-
 |08:46
-|Using function overloading.
+|Using '''function overloading.'''
 |-

@@ Line 73: / Line 73: @@
 |-
 |01:10
-|This is our '''header file as iostream.'''
+|This is our '''header file''' as '''iostream.'''
 |-
@@ Line 89: / Line 89: @@
 |-
 |01:24
-|'''Int a, int b and int c;'''
+|'''Int a, int b''' and '''int c'''
 |-
@@ Line 105: / Line 105: @@
 |-
 |01:38
-|We pass two arguments '''float d'''  and '''float e'''
+|We had pass two arguments '''float d'''  and '''float e'''
 |-
@@ Line 129: / Line 129: @@
 |-
 |02:03
-|Then we call the function '''add '''with three''' '''arguments.
+|Then we call the function '''add '''with three ''' arguments.'''
 |-
@@ Line 141: / Line 141: @@
 |-
 |02:12
-|Now here we accept floating point numbers from the user.
+|Now here we accept '''floating point numbers''' from the user.
 |-
@@ Line 161: / Line 161: @@
 |-
 |02:29
-|Open the terminal by pressing '''Ctrl, Alt and T '''keys simultaneously on your keyboard.
+|Open the terminal window by pressing '''Ctrl, Alt and T '''keys simultaneously on your keyboard.
 |-
@@ Line 169: / Line 169: @@
 |-
 |02:49
-|'''Press Enter'''
+|Press '''Enter'''
 |-
@@ Line 177: / Line 177: @@
 |-
 |02:53
-|'''Press Enter'''
+|Press '''Enter'''
 |-
@@ Line 205: / Line 205: @@
 |-
 |03:19
-|The output is displayed as:
+|The output is displayed as: '''Sum of floating point numbers is 13.4'''
 '''Sum of floating point numbers is 13.4'''
 |-
@@ Line 230: / Line 229: @@
 |-
 |03:44
-|And the return-type is also same.
+|And the '''return-type''' is also same.
 |-
@@ Line 238: / Line 237: @@
 |-
 |03:49
-|'''Here is an example on function Overriding'''
+|Here is an example on '''function Overriding'''
 |-
 |03:53
-|'''Note that our filename is override.cpp.'''
+|Note that our filename is '''override.cpp.'''
 |-
@@ Line 254: / Line 253: @@
 |-
 |04:03
-|Here we have the''' std namespace.'''
+|Here we are using the''' std namespace.'''
 |-
@@ Line 282: / Line 281: @@
 |-
 |04:30
-|In this we add the two numbers and print the sum.
+|In this we add the two numbers and print the '''sum.'''
 |-
@@ Line 330: / Line 329: @@
 |-
 |05:26
-|In this we create an''' object '''of''' class arithmetic as p.'''
+|In this we create an''' object '''of ''' class arithmetic''' as '''p.'''
 |-
@@ Line 350: / Line 349: @@
 |-
 |05:46
-|Here, '''p''' is set to the address of '''arith.
+|Now here, '''p''' is set to the address of '''arith.
 |-
@@ Line 386: / Line 385: @@
 |-
 |06:22
-|And pass '''arguments''' as ''' 6 '''and''' 5''' as argument
+|And we pass  ''' 6 '''and''' 5''' as argument
 |-

@@ Line 54: / Line 54: @@
 |00:53
 |Let us look at an example.
 |-
 |00:56
 |I have already typed the code on the editor.
 |-
@@ Line 200: / Line 198: @@
 |03:13
 |I will enter as: '''4.5''' and '''8.9'''
 |-
 |03:17
@@ Line 276: / Line 275: @@
 |04:23
 |Then we stored the value in '''a''' and '''b'''.
 |-
@@ Line 388: / Line 386: @@
 |-
 |06:22
-|And pass''' arguments '''as''' 6 '''and''' 5''' as argument
+|And pass '''arguments''' as ''' 6 '''and''' 5''' as argument
 |-
@@ Line 533: / Line 531: @@
 |08:46
 |Using function overloading.
 |-

@@ Line 1: / Line 1: @@
 {| border=1
 | '''Time'''
@@ Line 521: / Line 520: @@
 |-
 |08:31
-|functions with the same argument and same return type and
+|functions with the same argument and same return type and difference between both.
-−
-−
-|-
-|08:36
-|'''Difference between both.'''
 |-