Compilare: user.cpp: In function ‘int cmmdc(int, int)’: user.cpp:18:9: warning: ‘y’ may be used uninitialized in this function [-Wmaybe-uninitialized] if (y>1) return 0; ^ user.cpp: In function ‘int main()’: user.cpp:18:9: warning: ‘y’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:12:6: note: ‘y’ was declared here int y,x=0; ^