Compilare: user.cpp: In function ‘int main()’: user.cpp:95:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("poligon.in", "r", stdin); ^ user.cpp:96:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("poligon.out", "w", stdout); ^ user.cpp:98:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &k); ^ user.cpp:101:40: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &v[i].x, &v[i].y); ^ user.cpp:132:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &p.x, &p.y); ^ user.cpp: In function ‘int cautb_vx(int)’: user.cpp:41:31: warning: ‘mij’ may be used uninitialized in this function [-Wmaybe-uninitialized] int st = 0, dr = lvx - 1, mij; ^ user.cpp: In function ‘int cautb_vx2(int)’: user.cpp:57:31: warning: ‘mij’ may be used uninitialized in this function [-Wmaybe-uninitialized] int st = 0, dr = lvx - 1, mij; ^ user.cpp: In function ‘int main()’: user.cpp:118:9: warning: ‘mij’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(fs > fd) swap(fs, fd); ^ user.cpp:118:9: warning: ‘mij’ may be used uninitialized in this function [-Wmaybe-uninitialized]