[C] warning C4996: '_open()': This function or variable may be unsafe. Consider using _sopen_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

실행환경
Desktop	조립식
CPU	Intel(R) Core(TM) i7-2600K CPU @ 3.40GHz 3.40GHz
Memory	8.00 GB
OS	Windows 7 Professional K 64bit
Java	1.8.0_05
MySQL	Ver 14.14 Distrib 5.6.19, for Win64
Web Server	Apache Tomcat 7.0.51

문제점

컴파일시 아래와 같은 에러 중 어느 한가지라도 발생했을 경우.(확실치는 않다.)

Warning    2    warning C4996: 'sprintf': This function or variable may be unsafe. Consider using sprintf_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.    f:\fernando luiz\teste-3205\ps3000.c    336    1    Programa 3205
Warning    3    warning C4996: 'strcpy': This function or variable may be unsafe. Consider using strcpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.    f:\fernando luiz\teste-3205\ps3000.c    363    1    Programa 3205
Warning    4    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.    f:\fernando luiz\teste-3205\ps3000.c    369    1    Programa 3205
Warning    5    warning C4996: 'fscanf': This function or variable may be unsafe. Consider using fscanf_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.    f:\fernando luiz\teste-3205\ps3000.c    371    1    Programa 3205
Warning    6    warning C4996: 'strtok': This function or variable may be unsafe. Consider using strtok_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.    f:\fernando luiz\teste-3205\ps3000.c    374    1    Programa 3205
Warning    7    warning C4996: 'strtok': This function or variable may be unsafe. Consider using strtok_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.    f:\fernando luiz\teste-3205\ps3000.c    375    1    Programa 3205
Warning    9    warning C4996: 'sprintf': This function or variable may be unsafe. Consider using sprintf_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.    f:\fernando luiz\teste-3205\ps3000.c    718    1    Programa 3205
Warning    10    warning C4996: 'sprintf': This function or variable may be unsafe. Consider using sprintf_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.    f:\fernando luiz\teste-3205\ps3000.c    727    1    Programa 3205
Warning    11    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.    f:\fernando luiz\teste-3205\ps3000.c    729    1    Programa 3205
Warning    12    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.    f:\fernando luiz\teste-3205\ps3000.c    754    1    Programa 3205
Warning    13    warning C4996: 'sprintf': This function or variable may be unsafe. Consider using sprintf_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.    f:\fernando luiz\teste-3205\ps3000.c    766    1    Programa 3205
Warning    14    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.    f:\fernando luiz\teste-3205\ps3000.c    768    1    Programa 3205
Warning    15    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.    f:\fernando luiz\teste-3205\ps3000.c    792    1    Programa 3205
Warning    16    warning C4996: 'sprintf': This function or variable may be unsafe. Consider using sprintf_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.    f:\fernando luiz\teste-3205\ps3000.c    806    1    Programa 3205
Warning    17    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.    f:\fernando luiz\teste-3205\ps3000.c    808    1    Programa 3205
Warning    18    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.    f:\fernando luiz\teste-3205\ps3000.c    830    1    Programa 3205
Warning    19    warning C4996: 'sprintf': This function or variable may be unsafe. Consider using sprintf_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.    f:\fernando luiz\teste-3205\ps3000.c    842    1    Programa 3205
Warning    20    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.    f:\fernando luiz\teste-3205\ps3000.c    844    1    Programa 3205
Warning    21    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.    f:\fernando luiz\teste-3205\ps3000.c    866    1    Programa 3205
Warning    22    warning C4996: 'strcpy': This function or variable may be unsafe. Consider using strcpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.    f:\fernando luiz\teste-3205\ps3000.c    911    1    Programa 3205
Warning    23    warning C4996: 'strcpy': This function or variable may be unsafe. Consider using strcpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.    f:\fernando luiz\teste-3205\ps3000.c    939    1    Programa 3205

해결방안

Project properties > Configuration Properties > C/C++ > Preprocessor > Preprocessor Definitions > _CRT_SECURE_NO_WARNINGS
프로젝트 오른쪽 클릭 > 속성 > 구성 속성 > C/C++ > 전처리기 > 전처리기 정의 > _CRT_SECURE_NO_WARNINGS 추가.

보안상의 문제로 다른 함수를 사용하라는 것인데 설정 추가로 해결할 수 있다.