Factorial of a Number in C++. Program to find Factorial of a Number in C++

Factorial : The product of all numbers from one to a number is the Factorial of that number. The factorial of 5 is 5 × 4 × 3 × 2 × 1 = 120. Factorial of 0 is 1. The Factorial is only defined for positive Integers.

 

Program to find Factorial of a Number

Logic :

• Take the number
• Pass the number to the function
• Calculate the product of all numbers from one to given number
• Print the Factorial

Code :

#include<bits/stdc++.h>
using namespace std;

int fact(int x)
{
    if(x==1)
    {
        return 1;
    }
    return x*fact(x-1);
    
}

int main()
{
    int n;
    cin>>n;
    cout<<fact(n);
    return 0;
}

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