Eroare de compilare: user.cpp: In function ‘bool R(char*)’: user.cpp:8: error: ‘strlen’ was not declared in this scope user.cpp:10: error: ‘strlen’ was not declared in this scope user.cpp:12: error: ‘strlen’ was not declared in this scope user.cpp:15: error: ‘strlen’ was not declared in this scope user.cpp:15: error: ‘strcmp’ was not declared in this scope user.cpp:17: error: ‘strlen’ was not declared in this scope user.cpp:23: error: ‘strcat’ was not declared in this scope user.cpp:31: error: ‘strlen’ was not declared in this scope user.cpp:43: error: ‘strlen’ was not declared in this scope user.cpp:55: error: ‘strcat’ was not declared in this scope user.cpp:63: error: ‘strlen’ was not declared in this scope user.cpp:74: error: ‘strcat’ was not declared in this scope user.cpp:77: error: ‘strlen’ was not declared in this scope user.cpp: In function ‘int main()’: user.cpp:105: error: ‘memset’ was not declared in this scope