Compilare: user.c: In function ‘main’: user.c:74:15: warning: ‘c’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(a+b+c<=3) ^ user.c:74:13: warning: ‘b’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(a+b+c<=3) ^ user.c:74:13: warning: ‘a’ may be used uninitialized in this function [-Wmaybe-uninitialized]