Compilare: user.cpp: In function ‘int main()’: user.cpp:9:43: warning: unused variable ‘j’ [-Wunused-variable] short x,y,x1,y1,x2,y2,lin,col,pi,pf,i,j,q,n; ^ user.cpp:10:11: warning: unused variable ‘dx’ [-Wunused-variable] short dx[10]={-1,0,1,0}; ^ user.cpp:11:11: warning: unused variable ‘dy’ [-Wunused-variable] short dy[10]={0,1,0,-1}; ^