Borderou de evaluare (job #226468)

Compilare: user.cpp: In function ‘int main()’: user.cpp:50:13: warning: unused variable ‘k’ [-Wunused-variable] user.cpp: In constructor ‘instream::instream(const char*)’: user.cpp:15:44: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp: In function ‘int main()’: user.cpp:68:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp: In member function ‘void instream::advance()’: user.cpp:41:48: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp: In function ‘int main()’: user.cpp:65:47: warning: ‘j’ may be used uninitialized in this function [-Wuninitialized]