Compilare: user.cpp: In member function ‘bool hashh::operator==(const hashh&) const’: user.cpp:32:19: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] return (h1==aux.h1 & h2==aux.h2 && nr==aux.nr); ^ user.cpp: In function ‘int main()’: user.cpp:63:47: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("aiacupalindroame.in", "r", stdin); ^ user.cpp:64:49: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("aiacupalindroame.out", "w", stdout); ^ user.cpp:66:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&q); ^ user.cpp:69:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&x); ^ user.cpp:72:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("\n%s",car+2); ^ user.cpp:90:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&x,&y); ^