Compilare: user.cpp: In function ‘void lee()’: user.cpp:28:18: warning: statement has no effect [-Wunused-value] u==0; ^ user.cpp:37:18: warning: statement has no effect [-Wunused-value] u==0; ^ user.cpp:46:18: warning: statement has no effect [-Wunused-value] u==0; ^ user.cpp:55:18: warning: statement has no effect [-Wunused-value] u==0; ^ user.cpp:17:18: warning: unused variable ‘i’ [-Wunused-variable] int p=1,u=nc,i,j,x,y; ^ user.cpp:17:20: warning: unused variable ‘j’ [-Wunused-variable] int p=1,u=nc,i,j,x,y; ^ user.cpp: In function ‘int main()’: user.cpp:80:13: warning: unused variable ‘s’ [-Wunused-variable] int i,j,s,min=999999; ^