Compilare: user.cpp: In function ‘long int cauta(int, int, long int)’: user.cpp:10:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j; ^ user.cpp: In function ‘int main()’: user.cpp:32:17: warning: unused variable ‘nr’ [-Wunused-variable] int m,i,x,y,nr; ^ user.cpp: In function ‘long int cauta(int, int, long int)’: user.cpp:25:1: warning: control reaches end of non-void function [-Wreturn-type] } ^