Compilare: user.cpp: In function ‘void read()’: user.cpp:125:9: warning: unused variable ‘i’ [-Wunused-variable] int i, px, py; ^ user.cpp:125:12: warning: unused variable ‘px’ [-Wunused-variable] int i, px, py; ^ user.cpp:125:16: warning: unused variable ‘py’ [-Wunused-variable] int i, px, py; ^ user.cpp: In function ‘void BRUT()’: user.cpp:77:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &cx, &cy); ^ user.cpp:95:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("\n%c %d", &d, &x); ^ user.cpp: In function ‘void read()’: user.cpp:126:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("zc.in", "r", stdin); ^ user.cpp:127:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &n, &m); ^ user.cpp: In function ‘void write()’: user.cpp:260:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("zc.out", "w", stdout); ^