this is my code

#include<math.h>

using namespace std;

int main()

{

int n,a[n];

int i,j,c;

cout <<pow(5,2);

```
cin >>n;
for(i=0;i<n;i++)
{
c=0;
cin>>a[i];
for(j=1;j==13;j++)
{
if(a[i]/pow(5,j)!=0)
c=c+(a[i]/pow(5,j));
}
cout <<c;
}
```

}

for the factorial(easy) problem

when i run this program in codeblocks it crashes , but if i remove the initial pow(0 it runs but does not give the proper output(give 0 to everything).