Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:40: error: ‘index’ does not have class type user.cpp:53: error: ‘index’ does not have class type user.cpp:68: warning: comparison between signed and unsigned integer expressions user.cpp:74: warning: comparison between signed and unsigned integer expressions user.cpp:17: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:18: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:21: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result