Compilare: main.cpp: In function 'int main()': main.cpp:41:10: warning: 'c' may be used uninitialized in this function [-Wmaybe-uninitialized] char c; ^ main.cpp:180:36: warning: 'col' may be used uninitialized in this function [-Wmaybe-uninitialized] cout<<lin<<" "<<col<<"\n"<<c; ^ main.cpp:180:20: warning: 'lin' may be used uninitialized in this function [-Wmaybe-uninitialized] cout<<lin<<" "<<col<<"\n"<<c; ^~~ main.cpp:155:21: warning: 'poz' may be used uninitialized in this function [-Wmaybe-uninitialized] if (a[i][j].zona!=poz && a[i-1][j].zona==poz) ^~