rewind

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Header File

stdio.h

Category

Input/output Routines

Prototype

void rewind(FILE *stream);

Description

Repositions a file pointer to the beginning of a stream.

rewind(stream) is equivalent to fseek(stream, 0L, SEEK_SET), except that rewind clears the end-of-file and error indicators, while fseek clears the end-of-file indicator only.

After rewind, the next operation on an update file can be either input or output.

Return Value

None.

Example



 #include <stdio.h>
 #include <dir.h>
 int main(void)
 {
     FILE *fp;
     char *fname = "TXXXXXX", *newname, first;
     newname = mktemp(fname);
     fp = fopen(newname,"w+");
     fprintf(fp,"abcdefghijklmnopqrstuvwxyz");
     rewind(fp);
     fscanf(fp,"%c",&first);
     printf("The first character is: %c\n",first);
     fclose(fp);
     remove(newname);
     return 0;
 }



Portability



POSIX Win32 ANSI C ANSI C++

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