Compilare: user.cpp: In member function ‘bool aww::operator<(const aww&) const’: user.cpp:14:12: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (x == a.x) ^ user.cpp: In function ‘int main()’: user.cpp:47:28: warning: narrowing conversion of ‘(((int)a11) + 1)’ from ‘int’ to ‘short int’ inside { } [-Wnarrowing] v[++k] = (aww){a11 + 1, b, (int)b11, cul}; ^ user.cpp:30:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("rox.in", "r", stdin); ^ user.cpp:31:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("rox.out", "w", stdout); ^ user.cpp:34:35: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d %d %d", &n, &m, &u); ^ user.cpp:42:63: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%hi %hi %hi %hi %c", &a, &b, &a11, &b11, &cul); ^ user.cpp:62:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d", &q); ^ user.cpp:67:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%hi %hi", &a, &b); ^