red.cpp: In member function 'bool bigInt::operator>=(bigInt)': red.cpp:119: warning: comparison between signed and unsigned integer expressions red.cpp: In member function 'std::string bigInt::to_string()': red.cpp:148: warning: comparison between signed and unsigned integer expressions red.cpp:152: warning: comparison between signed and unsigned integer expressions red.cpp: In member function 'bigInt bigInt::operator*(int)': red.cpp:164: warning: comparison between signed and unsigned integer expressions red.cpp:165: warning: comparison between signed and unsigned integer expressions red.cpp: In member function 'bigInt bigInt::operator*(bigInt)': red.cpp:174: warning: comparison between signed and unsigned integer expressions red.cpp:175: warning: comparison between signed and unsigned integer expressions red.cpp: In function 'std::ostream& operator<<(std::ostream&, bigInt)': red.cpp:195: warning: comparison between signed and unsigned integer expressions red.cpp: In function 'int read()': red.cpp:214: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result red.cpp:218: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result red.cpp:223: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result