factorial in c++
#include<bits/stdc++.h>
#include<stdio.h>
using namespace std;
int fact(int i){
if (i <= 1) return 1;
else return i*fact(i-1);
}
int main(){
ios::sync_with_stdio(0);
cin.tie(0);
int N;
cin >> N;
cout << fact(N) << "\n";
return 0;
}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 + 1Factorial en c++ con while
#include <stdio.h>
#include <stdlib.h>
int main(int argc, char *argv[])
{
// Variables a utilizar
long int Resultado=0;
long int Factorial;
// Solicitar numero para calcular el factorial
printf("Introduzca No. para calcular el factorial ...: ");
scanf(" %ld", &Factorial);
// Calcular el factorial del numero solicitado
Resultado = 1;
while(Factorial > 1) {
Resultado *= Factorial;
printf(" %ld x",Factorial);
Factorial--;
}
printf(" 1 = %ld\n\n",Resultado);
system("PAUSE");
return 0;
}
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