Compilare: main.cpp: In function 'bool check(int, int)': main.cpp:25:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ main.cpp: In function 'int main()': main.cpp:63:18: warning: 'y1' may be used uninitialized in this function [-Wmaybe-uninitialized] dist[x1][y1] = 1; ~~~~~~~~~~~~~^~~ main.cpp:63:18: warning: 'x1' may be used uninitialized in this function [-Wmaybe-uninitialized] main.cpp:68:28: warning: 'y2' may be used uninitialized in this function [-Wmaybe-uninitialized] if (!(i == x2 && j == y2)) ~~^~~~~ main.cpp:68:17: warning: 'x2' may be used uninitialized in this function [-Wmaybe-uninitialized] if (!(i == x2 && j == y2)) ~~^~~~~