Compilare: main.cpp: In function 'int main()': main.cpp:96:46: warning: 'y2' may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<x1<<" "<<y1<<" "<<x2<<" "<<y2<<'\n'; ^~~~ main.cpp:96:37: warning: 'x2' may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<x1<<" "<<y1<<" "<<x2<<" "<<y2<<'\n'; ^~~ main.cpp:96:28: warning: 'y1' may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<x1<<" "<<y1<<" "<<x2<<" "<<y2<<'\n'; ^~~ main.cpp:96:19: warning: 'x1' may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<x1<<" "<<y1<<" "<<x2<<" "<<y2<<'\n'; ^~~ main.cpp:87:34: warning: 'b' may be used uninitialized in this function [-Wmaybe-uninitialized] cnt=(a-i+1)*(b-j+1); ~^~ main.cpp:87:26: warning: 'a' may be used uninitialized in this function [-Wmaybe-uninitialized] cnt=(a-i+1)*(b-j+1); ~^~