warning C4996: 'fopen': This function or variable may be unsafe. Consider using fopen_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

warning C4996: 'fopen': This function or variable may be unsafe. Consider using fopen_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

같은 에러 메시지가 나오는 부분을 보면

FILE *m_fp;

m_fp  = fopen(filename, mode);

로 되어 있을때 에러난다...

이럴때.. 밑줄 부분만... 다음과 같이 바꿔 주자...

fopen_s(&m_fp, filename, mode); // Warning C4996 방지