Compilare: main.cpp: In function 'int main()': main.cpp:114:9: warning: unused variable 'it' [-Wunused-variable] 114 | int it = 0; | ^~ main.cpp:135:31: warning: 'y1' may be used uninitialized [-Wmaybe-uninitialized] 135 | out << x1 << " " << y1 << " " << x1 + dx << " " << y1 + dy << '\n'; | ^~~ main.cpp:116:13: note: 'y1' was declared here 116 | int x1, y1; | ^~ main.cpp:135:18: warning: 'x1' may be used uninitialized [-Wmaybe-uninitialized] 135 | out << x1 << " " << y1 << " " << x1 + dx << " " << y1 + dy << '\n'; | ^~~ main.cpp:116:9: note: 'x1' was declared here 116 | int x1, y1; | ^~