Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:43: error: ‘strlen’ was not declared in this scope user.cpp:62: warning: format ‘%ld’ expects type ‘long int’, but argument 2 has type ‘long long int’ user.cpp:64: warning: format ‘%ld’ expects type ‘long int’, but argument 2 has type ‘int’ user.cpp:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:42: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result user.cpp:42: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result