program to calculate factorial of number in c++
#include <iostream>
using namespace std;
int main()
{
unsigned int n;
unsigned long long factorial = 1;
cout << "Enter a positive integer: ";
cin >> n;
for(int i = 1; i <=n; ++i)
{
factorial *= i;
}
cout << "Factorial of " << n << " = " << factorial;
return 0;
}c++ factorial
#include <cmath>
int fact(int n){
return std::tgamma(n + 1);
}
// for n = 5 -> 5 * 4 * 3 * 2 = 120
//tgamma performas factorial with n - 1 -> hence we use n + 1write a program to find factorial of a number using function in c++
#include<stdio.h>
int factorial(int x);
int main(){
int a ;
printf("Enter a value \n");
scanf("%d",&a);
printf("The value of factorial of %d is %d",a,factorial(a));
return 0;
}
int factorial(int x){
printf("Calling factorial %d\n",x);
if (x==1 || x==0){
return 1;
}
else{
return x *factorial(x-1);
}
}
//This is written using recursion in cCopyright © 2021 Codeinu
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