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

Program, write a program for convert numbers upto 9 to alphabet?Eg.now ente...

write a program for convert numbers upto 9 to alphabet?Eg.now enter the inputis 666 means output is "0" lphabet

Explain about the character constants in c language, Explain about the Char...

Explain about the Character Constants in c language? The character constant is a single alphabet and a single digit or a single special symbol enclosed within a pair of single

Explain class templates, Class Templates In addition to function  templ...

Class Templates In addition to function  templates, C++  also supports the  method of class templates. By definition, a class template is a class definition that explains a fam

How does free know the size of memory to be deleted.?, How does free know t...

How does free know the size of memory to be deleted.? int *i = (int *)malloc(12); followed by free(i); how did free function call know how much of memory to delete? A: It bas

What do you signify by stack unwinding?, A: this is a procedure during exce...

A: this is a procedure during exception handling while the destructor is called for all local objects in the stack among the place where the exception was thrown & where this is ca

Program to calculate average of marks, Program for calculate average of tot...

Program for calculate average of total marks: #include using namespace std; void print(int marks_arr[],int cnt) { int ind[cnt]; int i=0; int j=0; int k=0;

Create a program that converts numbers to characters, People sometimes give...

People sometimes give their phone numbers using one or more alphabetic characters. Create a program that converts the alphabetic characters to their corresponding numbers. For exam

Decode, Problem Description Smugglers are becoming very smart day by day. N...

Problem Description Smugglers are becoming very smart day by day. Now they have developed a new technique of sending their messages from one smuggler to another. In their new techn

Programming, I have a C++ programming assignment due on 8th January. As I a...

I have a C++ programming assignment due on 8th January. As I am out of country and cannot complete it, I would like to know how much fees would you charge to complete the assignmen

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