#include <stdio.h>

main()
{ 

  char *input;

  printf("Content-type: text/html\n\n");
  if (scanf("%s", input)!=0) /* you can now generate the output HTML */
       { /* parse input into variables */
         printf("< html> ");
         printf("I got: %s ",input);
         printf("< /html> ");
         return 1;}
  else /* there is no input so generate the form */
      {  printf("< html> ");
         printf("< form method=""post"" action=""this file's name""> ");
         printf("< input name=""input""> ");
         printf("< input type=""submit""> ");
         printf("< /form> ");  
         printf("< /html> ");
         return 1;}
         }