How to find factorial of a given number using C++ program | techgsr

Welcome to our blog post In this program, we will learn program how to find factorial of a given number using C++ program? Here, we will implement this program with and without using user define function.

 

Logical Part of program:

1. Input a number
2. Initialize the factorial variable with 1
3. Initialize the loop counter with N (Run loop from number (N) to 1)
4. Multiply the loop counter’s value with factorial variable

 

#include <iostream>

using namespace std;

 

int main()

{

int num,i;

long int fact=1;

 

cout<<“Enter an integer number: “;

cin>>num;

 

for(i=num;i>=1;i–)

fact=fact*i;

 

cout<<“Factorial of “<<num<<” is = “<<fact<<endl;

 

return 0;

}

 

Output :-

 

Enter an integer number: 6

Factorial of 6 is = 720