metagram

#include <iostream>
#include <windows.h>
using namespace std;

int main()
{
    int n;
cout<<"ile prob? "<<endl;
cin>>n;
for (int m=0;m<n;m++)
{
    string a,b;
    cout<<"podaj 1 slowo "<<endl;
    cin>>a;
    cout<<"podaj 2 slowo "<<endl;
    cin>>b;
    int i,j,r=0,o=0;;
    i = a.length();
    j = b.length();
    if (i==j)
    {
        for(o=0;o<i;o++)
{


        if(a[o]!=b[o])
        {
            r=r+1;

        }
}
if (r==1)
{
    cout<<"sa metagramami"<<endl;
}
else
{
    cout<<"nie sa"<<endl;
}
    }
    else
    {
        cout<<"roznej dlugosci"<<endl;

    }


}

    return 0;
}