Compilare: main.cpp: In function 'int suprafata(int, int, char&)': main.cpp:37:17: warning: unused variable 's' [-Wunused-variable] int ii, jj, s = 0, maxx = 0; ^ main.cpp: In function 'int main()': main.cpp:85:18: warning: 'c' may be used uninitialized in this function [-Wmaybe-uninitialized] char cc, c; ^ main.cpp:97:41: warning: 'y' may be used uninitialized in this function [-Wmaybe-uninitialized] out << x << " " << y << '\n' << c; ^ main.cpp:97:21: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized] out << x << " " << y << '\n' << c; ^~~