Compilare: main.cpp: In function 'int main()': main.cpp:40:51: warning: 'y2' may be used uninitialized in this function [-Wmaybe-uninitialized] g << x1 << " " << y1 << " " << x2 << " " << y2; ^ main.cpp:40:29: warning: 'y1' may be used uninitialized in this function [-Wmaybe-uninitialized] g << x1 << " " << y1 << " " << x2 << " " << y2; ^~~ main.cpp:40:42: warning: 'x2' may be used uninitialized in this function [-Wmaybe-uninitialized] g << x1 << " " << y1 << " " << x2 << " " << y2; ^~~ main.cpp:40:16: warning: 'x1' may be used uninitialized in this function [-Wmaybe-uninitialized] g << x1 << " " << y1 << " " << x2 << " " << y2; ^~~ main.cpp:33:33: warning: 'mxind' may be used uninitialized in this function [-Wmaybe-uninitialized] if(lin*col == maxSize and a[i][j] > mxind) { ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~