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

Get reverse engineer to linux game routine analysis, Get Reverse Engineer t...

Get Reverse Engineer to Linux game routine analysis Project Description: I want a fast and efficient reverse engineer with good knowledge of assembly x86 language, strong rev

Working with files in cpp, Operation Files 2.1. Your program should open an...

Operation Files 2.1. Your program should open and read the file specified by the first command line argument of the program. 2.2. The first line of the file contains an integer

Assign random integers to the variable, (Random Numbers) Write statements t...

(Random Numbers) Write statements that assign random integers to the variable n in the following ranges: a) 1 ≤ n ≤2 b) 1 ≤ n ≤100 c) 0 ≤ n ≤9 d) 1000 ≤ n ≤1112 e)

C++, Write a c++ program to find the sum of 0.123 ? 103 and 0.456 ? 102 and...

Write a c++ program to find the sum of 0.123 ? 103 and 0.456 ? 102 and write the result in three significant digits.

Area under the curve, Write a program to find the area under the curve y = ...

Write a program to find the area under the curve y = f(x) between x = a and x = b, integrate y = f(x) between the limits of a and b. The area under a curve between two points can b

Functions, Define  F u n c t i o n?  T h e r e a r e t...

Define  F u n c t i o n?  T h e r e a r e t w o t y p e s o f f u n ct i o n b u i l t - i n f un ct i o n s a n d u

LOOPS, HOW CAN WE EASLY LEARN C++

HOW CAN WE EASLY LEARN C++

What are literals, Literals (Constants) Constants are data storage loca...

Literals (Constants) Constants are data storage locations whose address is not accessible for the user. Their value is not altered during the course of the program. Literal

I need whatsapp software in my website, I need whatsapp software in my webs...

I need whatsapp software in my website Project Description: i need whatsapp software in my website same this whatsapp if anyone can make to me this in my website Skills

Program of 2d byte array dynamicall, In this lab, please complete a given p...

In this lab, please complete a given program to perform the following tasks: 1. Allocate a 10 by 5 2D byte array dynamically. The way of allocation must be consistent with page

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