echilibru.cpp:2:16: error: UI.c: No such file or directory echilibru.cpp:3:24: error: Repository.c: No such file or directory echilibru.cpp:4:24: error: Controller.c: No such file or directory echilibru.cpp:5:21: error: Product.c: No such file or directory echilibru.cpp:6:28: error: OperationStack.c: No such file or directory echilibru.cpp:7:26: error: DynamicArray.c: No such file or directory echilibru.cpp: In function 'int main()': echilibru.cpp:12: error: 'ProductRepo' was not declared in this scope echilibru.cpp:12: error: 'repo' was not declared in this scope echilibru.cpp:12: error: 'createRepo' was not declared in this scope echilibru.cpp:13: error: 'OperationStack' was not declared in this scope echilibru.cpp:13: error: 'undost' was not declared in this scope echilibru.cpp:13: error: 'createStack' was not declared in this scope echilibru.cpp:14: error: 'redost' was not declared in this scope echilibru.cpp:15: error: 'Controller' was not declared in this scope echilibru.cpp:15: error: 'ctrl' was not declared in this scope echilibru.cpp:15: error: 'createController' was not declared in this scope echilibru.cpp:16: error: 'UI' was not declared in this scope echilibru.cpp:16: error: 'ui' was not declared in this scope echilibru.cpp:16: error: 'createUI' was not declared in this scope echilibru.cpp:17: error: 'startUI' was not declared in this scope