Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:13: error: ‘n’ was not declared in this scope user.cpp:13: error: ‘m’ was not declared in this scope user.cpp:13: error: ‘p’ was not declared in this scope user.cpp:18: error: ‘a’ was not declared in this scope user.cpp:20: error: ‘dist’ was not declared in this scope user.cpp:25: error: ‘vx’ was not declared in this scope user.cpp:25: error: ‘nr’ was not declared in this scope user.cpp:26: error: ‘vy’ was not declared in this scope user.cpp:30: error: ‘nr’ was not declared in this scope user.cpp:32: error: ‘vx’ was not declared in this scope user.cpp:32: error: ‘vy’ was not declared in this scope user.cpp:34: error: ‘dist’ was not declared in this scope user.cpp:40: error: ‘nr’ was not declared in this scope user.cpp:41: error: ‘dist’ was not declared in this scope user.cpp:41: error: ‘j’ 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