Eroare de compilare: user.cpp:1:31: error: include\BigNumber.h: No such file or directory user.cpp: In function ‘int main()’: user.cpp:13: error: ‘BigNumber’ was not declared in this scope user.cpp:13: error: expected ‘;’ before ‘A’ user.cpp:14: error: expected ‘;’ before ‘B’ user.cpp:15: error: expected ‘;’ before ‘C’ user.cpp:17: error: ‘C’ was not declared in this scope user.cpp:17: error: ‘A’ was not declared in this scope user.cpp:17: error: ‘B’ was not declared in this scope user.cpp:21: error: ‘C’ was not declared in this scope