Eroare de compilare: user.cpp:12: error: expected constructor, destructor, or type conversion before ‘<’ token user.cpp: In function ‘void read_data()’: user.cpp:21: error: ‘set’ was not declared in this scope user.cpp:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘long long int find(double)’: user.cpp:32: error: ‘hash’ was not declared in this scope user.cpp:34: error: ‘hash’ was not declared in this scope user.cpp:36: error: ‘hash’ was not declared in this scope user.cpp: In function ‘int count()’: user.cpp:46: error: ‘a’ was not declared in this scope user.cpp:50: error: ‘hash’ was not declared in this scope user.cpp:45: warning: unused variable ‘len’ user.cpp: In function ‘int main()’: user.cpp:78: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:79: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result