#include <stdio.h>
FILE *fp;
char a[20],f1[20];
main(int ac, char **av)
{
  if(ac<2){
    printf("\n\t ***** chang *.mag2 to X,Y file (ALL) ******\n");
    printf("\n\tUsage: chxym t527                2011,3,3\n"); 
    printf("\n\t       call:   chxy t527?\n\n");
    exit(0);
  }
  system("ls *.cat >chxym.tmp");
  fp=fopen("chxym.tmp","r");
l10:
  fgets(a,20,fp); if(feof(fp))goto l20;
  sprintf(f1,"chxy %s%c !",av[1],a[4]);
  system(f1);
  goto l10;
l20:
  fclose(fp);
}