| Defined in header <stdio.h> | ||||
|---|---|---|---|---|
|
Moves the file position indicator to the beginning of the given file stream.
The function is equivalent to fseek(stream, 0, SEEK_SET);, except that end-of-file and error indicators are cleared.
The function drops any effects from previous calls to ungetc.
Parameters
| stream | - | file stream to modify |
Return value
(none).
Example
This example shows how to read a file twice.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 | #include <stdio.h> char str[20]; int main(void){ FILE *f; char ch; f = fopen("file.txt", "w"); for (ch = '0'; ch <= '9'; ch++) { fputc(ch, f); } fclose(f); f = fopen("file.txt", "r"); fread(str, 1, 10, f); puts(str); rewind(f); fread(str, 1, 10, f); puts(str); fclose(f); return 0;} |
Output:
1 2 | 01234567890123456789 |
References
- C11 standard (ISO/IEC 9899:2011):
- 7.21.9.5 The rewind function (p: 338)
- C99 standard (ISO/IEC 9899:1999):
- 7.19.9.5 The rewind function (p: 304)
- C89/C90 standard (ISO/IEC 9899:1990):
- 4.9.9.5 The rewind function
See also
| moves the file position indicator to a specific location in a file (function) | |
C++ documentation for rewind | |
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