rewind
Remonter à Stdio.h - Index
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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