my code is
#include <bits/stdc++.h>
using namespace std;
int main()
{
int t;
cin >> t;
while (t--)
{
string str;
int flag = 0, num = 0;
cin >> str;
for (int i = 0; str[i] != '\0'; i++)//xy xy xy xx xy yx
{ //1 1 1 1 1
if(str[i]== 'x' && str[i+1] == 'y')
{
num++;
i++;
}
if( str[i] == 'y' && str[i+1] == 'x')
{
num++;
i++;
}
}
cout << num<< endl;
}
}
please helpppp i am not getting my mistake please point it out