Compilare: user.cpp:11: warning: suggest parentheses around ‘+’ inside ‘<<’ user.cpp:11: warning: suggest parentheses around ‘+’ inside ‘<<’ user.cpp: In function ‘int search(unsigned int)’: user.cpp:22: warning: left shift count >= width of type user.cpp:23: warning: left shift count >= width of type user.cpp: In function ‘void insert(unsigned int)’: user.cpp:42: warning: left shift count >= width of type user.cpp:43: warning: left shift count >= width of type user.cpp: In function ‘void erase(unsigned int)’: user.cpp:67: warning: left shift count >= width of type user.cpp:68: warning: left shift count >= width of type user.cpp: In function ‘void make_hash()’: user.cpp:101: warning: left shift count >= width of type user.cpp:102: warning: left shift count >= width of type user.cpp: In function ‘int main()’: user.cpp:140: warning: unused variable ‘time’ user.cpp:117: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:118: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:120: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:126: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result