Borderou de evaluare (job #418011)

Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:8:38: error: expected ‘;’ before ‘:’ token user.cpp:10:12: error: ‘x’ was not declared in this scope user.cpp:10:17: error: ‘n’ was not declared in this scope user.cpp:11:5: error: ‘k’ was not declared in this scope user.cpp:27:9: error: ‘s’ was not declared in this scope user.cpp:30:13: error: ‘s’ was not declared in this scope user.cpp:7:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:9:23: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result]