Compilare: user.cpp: In function ‘int main()’: user.cpp:50:9: warning: unused variable ‘n’ [-Wunused-variable] int n,m,x,y,x1,x2,y1,y2,f,g,s; ^ user.cpp:50:17: warning: unused variable ‘x1’ [-Wunused-variable] int n,m,x,y,x1,x2,y1,y2,f,g,s; ^ user.cpp:50:20: warning: unused variable ‘x2’ [-Wunused-variable] int n,m,x,y,x1,x2,y1,y2,f,g,s; ^ user.cpp:50:23: warning: unused variable ‘y1’ [-Wunused-variable] int n,m,x,y,x1,x2,y1,y2,f,g,s; ^ user.cpp:50:26: warning: unused variable ‘y2’ [-Wunused-variable] int n,m,x,y,x1,x2,y1,y2,f,g,s; ^ user.cpp:50:31: warning: unused variable ‘g’ [-Wunused-variable] int n,m,x,y,x1,x2,y1,y2,f,g,s; ^