Borderou de evaluare (job #406852)

Compilare: user.cpp: In function ‘int main()’: user.cpp:10:13: warning: right operand of comma operator has no effect [-Wunused-value] 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] user.cpp:17:12: warning: ‘x’ may be used uninitialized in this function [-Wuninitialized]