Eroare de compilare: user.cpp: In function ‘void cit()’: user.cpp:9: error: ‘N’ was not declared in this scope user.cpp:9: error: ‘K’ was not declared in this scope user.cpp:14: error: ‘A’ was not declared in this scope user.cpp:15: error: ‘P’ was not declared in this scope user.cpp:20: error: ‘D’ was not declared in this scope user.cpp:20: error: ‘A’ was not declared in this scope user.cpp: In function ‘void optim(int, int)’: user.cpp:26: error: ‘D’ was not declared in this scope user.cpp:27: error: ‘A’ was not declared in this scope user.cpp:27: error: return-statement with a value, in function returning 'void' user.cpp:28: error: ‘D’ was not declared in this scope user.cpp:28: error: ‘OO’ was not declared in this scope user.cpp:31: error: ‘K’ was not declared in this scope user.cpp:33: error: ‘P’ was not declared in this scope user.cpp: In function ‘int main()’: user.cpp:41: error: ‘N’ was not declared in this scope