Compilare: main.cpp: In function 'int main()': main.cpp:75:10: warning: 'c' may be used uninitialized in this function [-Wmaybe-uninitialized] 75 | char c; | ^ main.cpp:90:39: warning: 'col' may be used uninitialized in this function [-Wmaybe-uninitialized] 90 | g << lin << " " << col << "\n" << c; | ^ main.cpp:90:17: warning: 'lin' may be used uninitialized in this function [-Wmaybe-uninitialized] 90 | g << lin << " " << col << "\n" << c; | ^~~