Borderou de evaluare (job #382324)

Compilare: user.cpp: In function ‘int main()’: user.cpp:71:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:49:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:50:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp: In function ‘char advance()’: user.cpp:19:33: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result]