Compilare: user.cpp: In function ‘int main()’: user.cpp:24:9: warning: unused variable ‘x’ [-Wunused-variable] int x,y,nrt,i,j; ^ user.cpp:24:11: warning: unused variable ‘y’ [-Wunused-variable] int x,y,nrt,i,j; ^ user.cpp:24:13: warning: unused variable ‘nrt’ [-Wunused-variable] int x,y,nrt,i,j; ^ user.cpp:24:17: warning: unused variable ‘i’ [-Wunused-variable] int x,y,nrt,i,j; ^ user.cpp:24:19: warning: unused variable ‘j’ [-Wunused-variable] int x,y,nrt,i,j; ^