Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:31: error: ‘matreu’ was not declared in this scope user.cpp:39: error: ‘matreu’ was not declared in this scope user.cpp:43: error: ‘matreu’ was not declared in this scope user.cpp:55: error: ‘matreu’ was not declared in this scope user.cpp:63: error: ‘matreu’ was not declared in this scope user.cpp:67: error: ‘matreu’ was not declared in this scope user.cpp:79: error: ‘matreu’ was not declared in this scope user.cpp:87: error: ‘matreu’ was not declared in this scope user.cpp:91: error: ‘matreu’ was not declared in this scope user.cpp:99: error: ‘matreu’ was not declared in this scope