在LED上显示一串数字

#include <reg51.h>
#include <delay.h>
#define uint unsigned int
#define uchar unsigned char
/**
* 显示一个LONG数据类型(显示最大值是99999999)
* @param val 要显示的数字
* @param deg 小数点位置(从后向前数)
*/
void printLong(long val,uint deg);
void main()
{
while(1)
{
printLong(1234,0);
delay(50);
}
}
void printLong(long val,uint deg)
{
long _val = val;
uint _deg = deg;
uint _who[] = {0xfe}; //哪一个灯
uint _number[] = {0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90}; //显示的数字
uint _ldeg = 0x7f; //小数点

//P0 = 0x80;
P1 = _number[0];
//P1 = _number[7];
}