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그냥 입출력 함수 관련된 질문인데여
FILE *f=fopen("list.txt","w")  
list.txt 라는 파일을 fopen 이랑 fprintf 를 만드는것 까지는 되요 
fcloseall 로 파일 닫고
FILE *b=open("list.txt","a+")
다시 list.txt 를 읽어 들이고 싶은데.... 이놈이 파일을 못읽어들이는거 같아요...
디버그 해가면서 한줄한줄 읽어도 이놈이 맛탱이가 간덧요...

어떻게 할수 있는 방법 없을까요...??