rewind
函数名: rewind
文件内部指针:随着对文件的读写文件的位置指针
文件指针:整个文件
用 法: void rewind(FILE *stream);
头文件: stdio.h
返回值:无
英文解释: A statement such as
rewind( cfptr );
causes a program's file position--which indicates the number of the next byte in the file to be read or written-- to be repositioned to the beginnning of the file pointed to by cfptr.
程序例:
#include <stdio.h>
#include <dir.h>
int main(void)
{
FILE *fp;
char fname[10] = "TXXXXXX", *newname, first;
newname = mktemp(fname);
fp = fopen(newname,"w+");
if(NULL==fp)
return 1;
fprintf(fp,"abcdefghijklmnopqrstuvwxyz");
rewind(fp);
fscanf(fp,"%c",&first);
printf("The first character is: %c\n",first);
fclose(fp);
remove(newname);
return 0;
}