fscanf() - fprintf() example : File Read « File « C / ANSI-C






fscanf() - fprintf() example


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

int main(void)
{
  FILE *fp;
  char s[80];
  int t;

  if((fp=fopen("test", "w")) == NULL) {
    printf("Cannot open file.\n");
    exit(1);
  }

  printf("Enter a string and a number: ");
  fscanf(stdin, "%s%d", s, &t); /* read from keyboard */

  fprintf(fp, "%s %d", s, t); /* write to file */
  fclose(fp); 

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

  fscanf(fp, "%s%d", s, &t); /* read from file */
  fprintf(stdout, "%s %d", s, t); /* print on screen */

  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. Get the next int value from a stream: how to use getw and putw
9. Get the next character from a stream: how to use fgetc
10. Get a string from a stream: how to use fgets Get a string from a stream: how to use fgets
11. Read formatted data from a stream: how to use fscanf
12. Get the next character: how to use getc
13.Create a file, write content and read the content
14.Reset the file reader pointer
15. Check for errors: How to use ferror