#include <stdio.h>
typedef int (*func_ptr)(const int c);
extern short esp_printf( const func_ptr, const char* ctrl, ...);

/*---------------------------------------------------*/
void main()
{
   int hex_value = 0x1234;
   int dec_value = 1234;
   int neg_value = -1234;
   long ldec_value = 12345678L;
   long lneg_value = -12345678L;

   /* Test various cases */
   esp_printf( putchar,
               "This first line outputs the "
               "format string.\r\n");
   esp_printf( putchar,
               "%s\r\n",
               "This second line outputs a string.");
   esp_printf( putchar,
               "Notice that the first %s\r\n",
               "two output lines had "
               "CR/LF at the end.");
   esp_printf( putchar,
               "%c%c%c%c line outputs 'This' "
               "as chars.\r\n\n",
               'T', 'h', 'i', 's');

   esp_printf( putchar,
               "Dec values: %d  %d   "
               "Hex value: %x\r\n",
               dec_value, neg_value, hex_value);
   esp_printf( putchar,
               "Long dec values: %ld  %ld\r\n",
               ldec_value,
               lneg_value);
   esp_printf( putchar,
               "Output sized strings: "
               "%20s %-20s\r\n",
               "Right string",
               "Left string");

   esp_printf( putchar,
               "Output sized values:  "
               "%20d %-20d\r\n",
               dec_value,
               neg_value);

   esp_printf( putchar,
               "                      "
               "%20x %-20x\r\n",
               hex_value,
               hex_value);
   esp_printf( putchar,
               "                      "
               "%20ld %-20ld\r\n",
               ldec_value,
               ldec_value);

   }