Geeksforgeeks Solution For " Small Factorial "

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Problem :- Calculate factorial of a given number N.

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Solution :- 

#include <iostream>
using namespace std;
int main()
{
    int t;
    cin>>t;
    while(t--)
    {
       unsigned long long int i,n,fact=1;
       cin>>n;
       for(i=1;i<=n;i++)
       fact=fact*i;
       cout<<fact<<endl;
    }
    return 0;
}

Output:-