rewind()

Declaration

void rewind(FILE* qpStream);

Description:

This function positions the internal file pointer for the stream "qpStream" to the begining of the file. The function clears all error and end-of-file indicators for the stream.

Example

#include <cstdio>

int main()
{
    char* cpFileName = "XoaX.txt";
    // Open an ASCII text file for reading.
    FILE* qpFile = fopen(cpFileName, "r");

    // Check that the file was opened successfully.
    if (!qpFile) {
        printf("Could not open the file %s\n",  cpFileName);
        return 1;
    }
    // Set the file pointer position to 4
    fseek(qpFile, 4, SEEK_SET);
    long lPos = ftell(qpFile);
    printf("File pointer is at %d\n", lPos);

    // Set the file pointer position back to 0
    rewind(qpFile);
    lPos = ftell(qpFile);
    printf("File pointer is at %d\n", lPos);

    fclose(qpFile);

    return 0;
}

Input File:

rewind() Input File

Output:

rewind() Output