Compilare: user.cpp: In function ‘int euc(int, int, long long int&, long long int&)’: user.cpp:31:9: warning: variable ‘d’ set but not used [-Wunused-but-set-variable] { int d; long long x0,y0; ^ user.cpp: In function ‘int main()’: user.cpp:41:11: warning: variable ‘d’ set but not used [-Wunused-but-set-variable] int i,d; ^ user.cpp: In function ‘int euc(int, int, long long int&, long long int&)’: user.cpp:36:1: warning: control reaches end of non-void function [-Wreturn-type] } ^