Compilare: main.cpp: In function 'int verifica(int, int)': main.cpp:27:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ main.cpp: In function 'int main()': main.cpp:94:53: warning: 'stopy' may be used uninitialized in this function [-Wmaybe-uninitialized] g<<startx<<" "<<starty<<" "<<stopx<<" "<<stopy; ^ main.cpp:94:43: warning: 'stopx' may be used uninitialized in this function [-Wmaybe-uninitialized] g<<startx<<" "<<starty<<" "<<stopx<<" "<<stopy; ^~~ main.cpp:94:31: warning: 'starty' may be used uninitialized in this function [-Wmaybe-uninitialized] g<<startx<<" "<<starty<<" "<<stopx<<" "<<stopy; ^~~ main.cpp:94:18: warning: 'startx' may be used uninitialized in this function [-Wmaybe-uninitialized] g<<startx<<" "<<starty<<" "<<stopx<<" "<<stopy; ^~~