Compilare: user.cpp: In function ‘int euclid(int, int, int&, int&)’: user.cpp:32:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:36:21: warning: unused variable ‘n’ [-Wunused-variable] int c,a,b,div,t,n,m,i,j,x,y; ^ user.cpp:36:23: warning: unused variable ‘m’ [-Wunused-variable] int c,a,b,div,t,n,m,i,j,x,y; ^ user.cpp:36:25: warning: unused variable ‘i’ [-Wunused-variable] int c,a,b,div,t,n,m,i,j,x,y; ^ user.cpp:36:27: warning: unused variable ‘j’ [-Wunused-variable] int c,a,b,div,t,n,m,i,j,x,y; ^