Calculate Factorial Using Recursion in CPP

Source Code

#include <iostream>

using namespace std;

int getFactorial( int );

int main(int argc, char** argv) {
 

int a;  // variable declaration for input
    
    // Taking input in variables
    cout<<"Enter First Number : ";
    cin>>a;
    //function call
    cout<<getFactorial(a);
   

return 0;
}

int getFactorial( int x) {
    
    if(x == 1)   //base condition
        return 1;
    else
        return  x * getFactorial( x - 1 );  // recursive call
}

Output

Working

This program use recursion method for calculation of factorial. Before this we have used Loops (factorial using while loop) for same results. In this program a function named as getFactorial is written and called recursively for factoial calculation.