func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int t;     cin >> t;     while (t--) {       int x1, y1, x2, y2;       cin >> x1 >> y1 >> x2 >> y2;       if (y1 == y2)         cout << abs(x2 - x1) <<   n ;       else if (x1 == x2)         cout << abs(y2 - y1) <<   n ;       else {         int x, y;         x = abs(x2 - x1);         y = abs(y2 - y1);         cout << x + y + 2 <<   n ;       }     }   }   