Compilare: user.cpp: In function ‘bool Check(int)’: user.cpp:34:9: warning: variable ‘x’ set but not used [-Wunused-but-set-variable] int x,x11,x12,y11,y12,y; ^ user.cpp: In function ‘int main()’: user.cpp:104:13: warning: unused variable ‘x’ [-Wunused-variable] int x=v[i].x; ^ user.cpp:105:13: warning: unused variable ‘y’ [-Wunused-variable] int y=v[i].y; ^ user.cpp:84:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("robotics.in","r",stdin); ^ user.cpp:85:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("robotics.out","w",stdout); ^ user.cpp:86:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&n,&m,&t); ^ user.cpp:89:50: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&v[i].x,&v[i].y,&v[i].tip); ^