Compilare: user.cpp: In function ‘int cmmdc(int, int)’: user.cpp:16:9: warning: ‘d’ may be used uninitialized in this function [-Wmaybe-uninitialized] return d; ^ user.cpp: In function ‘int main()’: user.cpp:29:10: warning: ‘d’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<d; ^