Compilare: user.cpp: In function ‘int main()’: user.cpp:11:5: warning: unused variable ‘j’ [-Wunused-variable] int j,i,n,m,h,r=0,x,y,ok=0; ^ user.cpp:11:13: warning: unused variable ‘h’ [-Wunused-variable] int j,i,n,m,h,r=0,x,y,ok=0; ^ user.cpp:11:15: warning: unused variable ‘r’ [-Wunused-variable] int j,i,n,m,h,r=0,x,y,ok=0; ^ user.cpp:11:23: warning: unused variable ‘ok’ [-Wunused-variable] int j,i,n,m,h,r=0,x,y,ok=0; ^