Borderou de evaluare (job #288422)

Eroare de compilare: user.cpp: In function 'int main()': user.cpp:9:21: error: 'n' was not declared in this scope user.cpp:9:27: error: 'm' was not declared in this scope user.cpp:11:8: error: 'i' was not declared in this scope user.cpp:12:9: error: 'j' was not declared in this scope user.cpp:13:21: error: 'a' was not declared in this scope user.cpp:6:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:7:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]