Compilare: main.cpp: In function 'int main()': main.cpp:94:49: warning: 'el.Elem::c' may be used uninitialized in this function [-Wmaybe-uninitialized] cout << el.a << ' ' << el.b << ' ' << el.c << ' '; ^~~ main.cpp:94:34: warning: 'el.Elem::b' may be used uninitialized in this function [-Wmaybe-uninitialized] cout << el.a << ' ' << el.b << ' ' << el.c << ' '; ^~~ main.cpp:94:19: warning: 'el.Elem::a' may be used uninitialized in this function [-Wmaybe-uninitialized] cout << el.a << ' ' << el.b << ' ' << el.c << ' '; ^~~