Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:12: error: ‘n’ was not declared in this scope user.cpp:12: error: ‘m’ was not declared in this scope user.cpp:12: error: ‘p’ was not declared in this scope user.cpp:13: error: ‘st’ was not declared in this scope user.cpp:14: error: ‘dr’ was not declared in this scope user.cpp:15: error: ‘i’ was not declared in this scope user.cpp:16: error: ‘j’ was not declared in this scope user.cpp:16: error: ‘a’ was not declared in this scope user.cpp:20: error: ‘b’ was not declared in this scope user.cpp:25: error: ‘b’ was not declared in this scope user.cpp:30: error: ‘j’ was not declared in this scope user.cpp:31: error: ‘b’ was not declared in this scope user.cpp:34: error: ‘j’ was not declared in this scope user.cpp:35: error: ‘a’ was not declared in this scope user.cpp:35: error: ‘b’ was not declared in this scope user.cpp:40: error: ‘j’ was not declared in this scope user.cpp:40: error: ‘b’ was not declared in this scope user.cpp:10: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:11: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result