Compilare: user.cpp: In function ‘int main()’: user.cpp:53:27: warning: unused variable ‘x’ [-Wunused-variable] short n,k,x1,y1,x2,y2,x,y,i,j; ^ user.cpp:53:29: warning: unused variable ‘y’ [-Wunused-variable] short n,k,x1,y1,x2,y2,x,y,i,j; ^ user.cpp:53:33: warning: unused variable ‘j’ [-Wunused-variable] short n,k,x1,y1,x2,y2,x,y,i,j; ^