Reset the file reader pointer : File Read « File « C / ANSI-C

Home
C / ANSI-C
1.assert.h
2.Console
3.ctype.h
4.Data Structure Algorithm
5.Data Type
6.Development
7.File
8.Function
9.Language Basics
10.Macro Preprocessor
11.Math
12.math.h
13.Memory
14.Pointer
15.setjmp.h
16.signal.h
17.Small Application
18.stdio.h
19.stdlib.h
20.String
21.string.h
22.Structure
23.time.h
24.wctype.h
C Tutorial
C++
C++ Tutorial
Visual C++ .NET
C / ANSI-C » File » File ReadScreenshots 
Reset the file reader pointer

#include <stdio.h>
#include <stdlib.h>

int main(int argc, char *argv[])
{
  FILE *fp;

  /* see if filename is specified */
  if(argc != 2) {
    printf("File name missing.\n");
    exit(1);
  }

  if((fp = fopen(argv[1]"r"))==NULL) {
    printf("Cannot open file.\n");
    exit(1);
  }

  /* show it once */
  while(!feof(fp))
    putchar(getc(fp));

  rewind(fp);

  /* show it twice */
  while(!feof(fp))
    putchar(getc(fp));

  fclose(fp);

  return 0;
}


           
       
Related examples in the same category
1.Reading strings from a file in reverse order
2.Messing about with formatted file I/OMessing about with formatted file I/O
3.Viewing the contents of a file
4.Search a set of numbers
5.Count the number of characters in a file
6.Open a file and read its content using fgetc
7.Get string from file
8.fscanf() - fprintf() example
9. Get the next int value from a stream: how to use getw and putw
10. Get the next character from a stream: how to use fgetc
11. Get a string from a stream: how to use fgets Get a string from a stream: how to use fgets
12. Read formatted data from a stream: how to use fscanf
13. Get the next character: how to use getc
14.Create a file, write content and read the content
15. Check for errors: How to use ferror
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.