UVa1585 Score

#include <iostream>
#include <cstdio>
#include <cstring>
using namespace std;
int main()
{
    char s[100];
    int i,j,n,ans;
    cin>>n;
    getchar();
    while (n>0)
    {
        n--;
        gets(s);
        ans=0;
        j=0;
        int len=strlen(s);
        for (i=0;i<len;i++)
        {
            if (s[i]=='O'){
                j++;
                ans+=j;        
            }
            if (s[i]=='X')
                j=0;
        }
        cout<<ans<<endl;
    }
}