Find no. of Trailing zeroes in factorial of given number

trailing zeroes depends on no. of 5's and 2's .

total=no. of 5's.
#include <iostream>
using namespace std;
int main()
{
int a=trailingZeroes(12);
cout<<a;
}
int trailingZeroes(int A) {
    int count=0;
    while(A>=5)
    {
        count=count+A/5;
        A=A/5;
    }
    return count;
}