Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:20: error: ‘strlen’ was not declared in this scope user.cpp:25: warning: name lookup of ‘strlen’ changed <built-in>:0: warning: matches this ‘unsigned int strlen(const char*)’ under ISO standard rules user.cpp:20: warning: matches this ‘strlen’ under old rules user.cpp:25: error: ‘strlen’ was not declared in this scope