Eroare de compilare: user.cpp:7: warning: integer constant is too large for ‘long’ type user.cpp:7: warning: overflow in implicit constant conversion user.cpp: In function ‘void read_data()’: user.cpp:19: error: ‘stdin’ was not declared in this scope user.cpp:19: error: ‘freopen’ was not declared in this scope user.cpp:20: error: ‘stdout’ was not declared in this scope user.cpp:21: error: ‘scanf’ was not declared in this scope user.cpp: In function ‘int main()’: user.cpp:109: error: ‘printf’ was not declared in this scope