#include <stdio.h>
#define MAXLEN 1000 /* Maximum length for string array */

main()
{
  char instring[MAXLEN];
  
  printf("Enter a string with leading and trailing blanks:\n");
  gets(instring);
  printf("input = '%s'\n", instring);
  preblank(instring); /* Remove leading blanks */
  tblank(instring); /* Remove trailing blanks */
  printf("output = '%s'\n", instring); /* Print modified string */
}