func_code_string: #include <bits/stdc++.h>   int main() {     int t, j;     scanf( %d , &t);     for (j = 1; j <= t; j++) {       int n, d = 0, i;       char a[100000], b[100000], c[100000];       scanf( %s %s %s , a, b, c);       n = strlen(a);       for (i = 0; i < n; i++) {         if (a[i] == c[i] || b[i] == c[i]) d++;         if (a[i] == b[i] && b[i] != c[i]) break;       }       if (d == n)         printf( YES n );       else         printf( NO n );     }   }   