Messing about with formatted file I/O

#include <stdio.h>

int main()
{
   long num1 = 2345637L;
   long num2 = 3451223L;
   long num3 = 7892234L;

   long num4 = 0L;
   long num5 = 0L;
   long num6 = 0L;

   float fnum = 0.0f;
   int   ival[6] = { 0 };
   int i = 0;
   FILE *pfile = NULL;
   char *filename = "C:\\myfile.txt";

   pfile = fopen(filename, "w");
   if(pfile == NULL){
     printf("Error opening %s for writing. Program terminated.", filename);
   }
   fprintf(pfile, "%6ld%6ld%6ld", num1, num2, num3);
   fclose(pfile);

   pfile = fopen(filename, "r");
   fscanf(pfile, "%6ld%6ld%6ld", &num4, &num5 ,&num6);
   printf("\n %6ld %6ld %6ld", num4, num5, num6);

   rewind(pfile);   /* Go to the beginning of the file */
   fscanf(pfile, "%2d%3d%3d%3d%2d%2d%3f", &ival[0], &ival[1],&ival[2], &ival[3], &ival[4] , &ival[5], &fnum);
   fclose(pfile);                   
   remove(filename);

   for( i = 0 ; i < 6 ; i++ )
     printf("%d\n", ival[i]);
   printf("\nfnum = %f\n", fnum);
}

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Messing about with formatted file I/O : File Read « File « C / ANSI-C

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