How To Teach Default argument in cpp Like A Pro

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In this example, we will explain to you how to use the Default argument in c++. To understand this topic it is necessary to have basic knowledge of C++. Please read this article carefully so that you can understand the Default argument in c++.

Default arguments 

c++ give new features in functions the name is default argument. The default argument is a new concept in function. Now you can set argument value in function declarations. but according to your need right to left.

c++ provides default argument in a function call to add a new concept.

the primary use of default arguments is to the extended parameter list of existing functions without requiring any change.

The default argument is listed in the function prototype and transmitted automatically to the called function when the corresponding arguments are omitted from the function call.

Look take an example

#include<iostream> using namespace std; int mul(int,int,int=1); int main() { int number1,number2; cout<<"\t\tDefault Argument Program "; cout<<"\n\nEnter two number: "; cin>>number1>>number2; cout<<"\n\nProduct of two number: "<<mul(number1,number2); int number3; cout<<"\n\nEnter Three number: "; cin>>number1>>number2>>number3; cout<<"Product of three number: "<<mul(number1,number2,number3); return 0; } int mul(int num1, int num2, int num3) { return(num1*num2*num3); }

Output Screen

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Now next you are, write your code in the comment below. 