§ 函数名 clearerr 功能复位错误标志 § 用法 void clearerr(FILE *stream); § 程序例 #include int main(void) { FILE *fp; char ch; /* open a file for writing */ fp = fopen("DUMMY.FIL", "w"); /* force an error condition by attempting to read */ ch = fgetc(fp); printf("%c\",ch); if (ferror(fp)) { /* display an error message */ printf("Error reading from DUMMY.FIL\"); /* reset the error and EOF indicators */ clearerr(fp); } fclose(fp); return 0; } |