Save and write different type of value into file : File Write « File « C / ANSI-C






  1. C / ANSI-C
  2. File
  3. File Write

Save and write different type of value into file

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

int main(void)
{
  FILE *fp;
  int i;

  /* open file for output */
  if((fp = fopen("my.txt", "wb"))==NULL) {
    printf("Cannot open file.\n");
    exit(1);
  }

  i = 10;

  if(fwrite(&i, sizeof(int), 1, fp) != 1) {
    printf("Write error occurred.\n");
    exit(1);
  }
  fclose(fp);

  /* open file for input */
  if((fp = fopen("my.txt", "rb"))==NULL) {
    printf("Cannot open file.\n");
    exit(1);
  }

  if(fread(&i, sizeof i, 1, fp) != 1) {
    printf("Read error occurred.\n");
    exit(1);
  }
  printf("i is %d",i);
  fclose(fp);

  return 0;
}








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