6.18.39 rewind Function

Resets the file pointer to the beginning of the file.

Include

<stdio.h>

Prototype

void rewind(FILE * stream);

Argument

stream

stream to reset the file pointer

Remarks

The function calls fseek(stream, 0L, SEEK_SET) and then clears the error indicator for the given stream.

Example

#include <stdio.h>

int main(void)
{
  FILE *myfile;
  char s[] = "cookies";
  int x = 10;

  if ((myfile = fopen("afile", "w+")) == NULL)
    printf("Cannot open afile\n");
  else
  {
    fprintf(myfile, "%d %s", x, s);
    printf("I have %d %s.\n", x, s);

    /* set pointer to beginning of file */
    rewind(myfile);
    fscanf(myfile, "%d %s", &x, &s);
    printf("I ate %d %s.\n", x, s);

    fclose(myfile);
  }
}

Example Output

I have 10 cookies.
I ate 10 cookies.