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

Implementation of the stack class in c++, Implementation of the Stack class...

Implementation of the Stack class in C++: How to implement stack class in c++. int Stack::push(int elem) {    if (top    {       list[top++] = elem;       r

Using functions create a program, In rPeANUt implement the "char getchar()"...

In rPeANUt implement the "char getchar()" and "void printstring(char *str)" functions. Using these functions implement the following: void main() {    while (1) {       ch

Operation on string - c ++ program, Operation on String - C ++ Program: ...

Operation on String - C ++ Program: Write a program to define operations on string in c++. class String {    char *char_ptr;   // pointer to string contents    int le

Explain the different types of errors in php, Explain the different types o...

Explain the different types of errors in PHP. Warnings, Notices and Fatal errors are the types of errors in PHP Notices: Notices signifies non-critical errors, i.e. ac

C programming., #queComputers are frequently used in check-writing systems,...

#queComputers are frequently used in check-writing systems, such as payroll and accounts payable applications. Many stories circulate regarding weekly pay- checks being printed (by

Thermodynamics, the program that solve the efficiency of otto cycle

the program that solve the efficiency of otto cycle

Pointers, Pointers are just numbers, representing addresses in memory. You ...

Pointers are just numbers, representing addresses in memory. You can add to and subtract from pointers, for instance. It is pretty easy to make mistakes with pointer math, however,

Define functions with arguments and no return values, Define Functions with...

Define Functions with arguments and no return values The calling function will read a data from the terminal and pass it on to called as function and this will work good as the

Change to palindrome, A palindrome is a string that reads the same from bot...

A palindrome is a string that reads the same from both the ends. Given a string S convert it to a palindrome by doing character replacement. Your task is to convert S to palindrome

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