Getting Wrong Answer

#1

The answer for test case of n as 30 and k as 7 is showing answer 0 . Below is my code.

#include <bits/stdc++.h>
using namespace std;

int fact(int n)
{
if(n==0 || n==1)
{
return 1;
}
return n * fact(n-1);
}

int main()
{
int t;
cin>>t;
while (t–)
{
int n,k;
cin>>n>>k;

    int ans = fact(n-1) / (fact(k-1) * fact(n-k));

    cout<<ans<<endl;
}

return 0;

}

#2

@vritant2405 factorials can have really large values that cannot be store in any available datatype in c++

#3

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