cutie1.cpp: In constructor 'instream::instream(const char*)': cutie1.cpp:15: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result cutie1.cpp: In constructor 'instream::instream(const char*)': cutie1.cpp:15: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result cutie1.cpp: In constructor 'instream::instream(const char*)': cutie1.cpp:15: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result cutie1.cpp: In member function 'void instream::advance()': cutie1.cpp:38: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result cutie1.cpp: In function 'int main()': cutie1.cpp:48: warning: unused variable 'p'