Write a C++ program in which find the factorial of a number using function.

Write a C++ program in which find the factorial of a number using function.

Program Code:

#include<iostream>

using namespace std;

// user defined function declaration

int fact(int);

// main() function definition with user defined function call in it

int main() 

{

int n;

cout <<"Enter a number to find the factorial : ";

cin>>n;

cout<<endl;

cout<<"Factorial of the given number is : " ;

// user defined function call fact(n)

cout<< fact(n);

return 0;

}

// user defined function definition which takes argument from the main program

int fact(int n) 

{

int i;

int f = 1;

for (i = n; i >= 1; i--) 

{

f = f * i;

}

return f;

}

The program output is tested on www.jdoodle.com

Output:

Enter a number to find the factorial : 5

Factorial of the given number is : 120

Thanks

Mukesh Rajput