Borderou de evaluare (job #48413)

Compilare: user.cpp: In function ‘int main()’: user.cpp:9:18: warning: unused variable ‘x’ [-Wunused-variable] user.cpp:9:28: warning: variable ‘a1’ set but not used [-Wunused-but-set-variable] user.cpp:7:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:8:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result]