ARM7 printf long long int

#include <aduc7026.h>
#include"stdio.h"

void RS232_init(void);
int main (void)
{
	unsigned long long int A;
	RS232_init();
	printf("Start \n");
	while(1)
	{
		while(1)
		{
			printf("Enter a Hex-number\n");
			if (scanf("%X",&A)) break;
			scanf("%*");				//Clearing scanf input stream
		}
		printf ("Your input %64.64lX\n",A);
		A *= A;
		printf ("The result %64.64lX\n",A);
	}
}

void RS232_init(void)
{
	GP1CON = 0x011;			// Setup tx & rx pins on P1.0 and P1.1
   							// Start setting up UART at 9600bps
   	COMCON0 = 0x080;		// Setting DLAB
   	COMDIV0 = 0x088;		// Setting DIV0 and DIV1 to DL calculated
   	COMDIV1 = 0x000;
   	COMCON0 = 0x007;		// Clearing DLAB
}