FCTRL 2 - c++ factorial program (codechef)

You are asked to calculate factorials of some small positive integers. Input

An integer t, 1<=t<=100, denoting the number of testcases, followed by t lines, each containing a single integer n, 1<=n<=100. Output

For each integer n given at input, display a line with the value of n! Example

Sample input: 4 1 2 5 3 Sample output: 1 2 120 6

Please tell me whats the mistake in my block of code ...whenever i try the test cases as specified in the problem, the output of the factorial of the last number 3 is incorrect (120 is the output for factorial of 3) Here is my block of code:

#include <iostream>

using namespace std;

/*
 * 
 */
int main(int argc, char** argv) {
    int testcase, n, i = 1;
    long fctrl = 1;
    scanf("%d", &testcase);
    while(testcase--) {
        cin >> n;
        while(i <= n) {
            fctrl *= i;
            i++;
        }
        cout << fctrl << endl;
    }

    return 0;
}