What is default argument, C/C++ Programming

Assignment Help:

Default argument:

When the argument is missing then the function will read the default value of the missing

argument.  To make use of default argument functionality the argument must be initialized in the prototype or declaration.

Rules for declaring default argument:

1.   The default value must given from right to left arguments

2.   Cannot assign only the first argument as default when there is more than one argument.

3.   All the arguments may be default.

4.   When there is more than one argument the intermediate argument cannot be a default.

int f_def(int x, int y=20); // Default argument value initialized at prototype.

void main( )

{int a=10, b=15,c;

c = f_def(a, b); //The value of c is 15 c = f_def(a); // The value of c is 30

}

int f_def(int x, int y)

{ return (x+y);

}

 

 


Related Discussions:- What is default argument

C programming, Byteland county is very famous for luminous jewels. Luminous...

Byteland county is very famous for luminous jewels. Luminous jewels are used in making beautiful necklaces. A necklace consists of various luminous jewels of particular colour. Nec

Exceptions handling in cpp, Exceptions. Your SVector class should throw fou...

Exceptions. Your SVector class should throw four exceptions: 3.1. If the constructor size is invalid, then it will just allow the implicit STL bad_alloc exception to pass up to mai

Destruction of local object, Need assignment help What's the order that ...

Need assignment help What's the order that local objects are destructed?

Decodethecode, how to decode the numerals to string..

how to decode the numerals to string..

Solve, solve for radius(R) of a circle of its area is to be inputted by a u...

solve for radius(R) of a circle of its area is to be inputted by a user. also display compute the circle diameter hint: area= pir21 pi=2.1416

Stone Game - Remove Last, #include int main() { int T; ...

#include int main() { int T; int N; int i; scanf("%d",&T)

Is probable to encompass virtual constructor? if yes, Is it probable to enc...

Is it probable to encompass Virtual Constructor? If yes, how? If not, Why?

C++ program, Receive 3 numbers and display them in ascending order from sma...

Receive 3 numbers and display them in ascending order from smallest to largest ed#

Dll, i need amibroker afl to dll plugin

i need amibroker afl to dll plugin

Radix sort - c program, Radix sort - C program: Write a program in c t...

Radix sort - C program: Write a program in c to define a radix sort. void main() {  int array[100],n;  int i;  void radix(int *,int);  printf ("How many nos\

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd