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

Algorithm, Sine function computation

Sine function computation

Is it legal for a member function to say delete this?, Is it legal for a me...

Is it legal for a member function to say delete this? A: As long as you're cautious, it's OK for an object to delete this. Here's how I define "cautious": You have to be a

Explain static class members, Static Class Members As we already know a...

Static Class Members As we already know all the objects of the class have dissimilar data members but invoke the similar member functions. Though, there is an exception to this

Puzzles, #questioA Padovan string P(n) for a natural number n is defined as...

#questioA Padovan string P(n) for a natural number n is defined as: P(0) = ‘X’ P(1) = ‘Y’ P(2) = ‘Z’ P(n) = P(n-2) + P(n-3), n>2 where + denotes string concatenation. For a str

Graphic.h, what is the syntax to get a coloured output.

what is the syntax to get a coloured output.

C program to print r diagonal triangle, C program to print R diagonal trian...

C program to print R diagonal triangle: #define rows 3 #define cols 3 void main() {                 int i=0,j=0;                 int arr[rows][cols];

Square maze, SquareMaze The SquareMaze class should be declared and defined...

SquareMaze The SquareMaze class should be declared and defined in maze.h and maze.cpp, respectively. Each SquareMaze object will represent a randomly-generated square maze and its

Arithmetic operation, a program that declares and prompts the user to enter...

a program that declares and prompts the user to enter two integer and performs the five arithmetic operations

Explain encapsulation and data hiding, Encapsulation and Data Hiding Th...

Encapsulation and Data Hiding The property of being a self-contained unit is known as encapsulation. The idea that the encapsulated unit can be used without knowing how it work

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