Compilare: user.cpp: In function ‘int main()’: user.cpp:39:18: warning: unused variable ‘X’ [-Wunused-variable] int i, x, y, X, Y, num = 0, flag; ^ user.cpp:39:21: warning: unused variable ‘Y’ [-Wunused-variable] int i, x, y, X, Y, num = 0, flag; ^ user.cpp:40:14: warning: unused variable ‘C’ [-Wunused-variable] Point B, C; ^ user.cpp:43:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("ograzi.in", "r", stdin); ^ user.cpp:44:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("ograzi.out", "w", stdout); ^ user.cpp:46:39: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d%d%d", &n, &m, &w, &h); ^ user.cpp:48:45: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d", &D [i].x1, &D [i].y1); ^ user.cpp:99:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d", &x, &y); ^