51单片机数码管显示32767以下的数字正常，32768以上的数字就是乱码，是数据类型定义错误吗？应该怎么改？我现在自学51，小白一个，求大佬指导！
原程序如下：
#include <reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit WE1 = P2^2;
sbit WE2 = P2^3;
sbit WE3 = P2^4;
uint i,ge,shi,bai,qian,wan;
void delay(uint z)
{
uint x,y;
for( x = z; x > 0; x--)
for(y = 124; y > 0; y--);
}
uint code duan[] = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
void display(i)
{
ge = i%10;
shi = i%100/10;
bai = i%1000/100;
qian = i%10000/1000;
wan = i/10000;
WE1 = 1;
WE2 = 1;
WE3 = 1;
P0 = duan[ge];
delay(1);
P0 = 0x00;
WE1 = 0;
WE2 = 1;
WE3 = 1;
P0 = duan[shi];
delay(1);
P0 = 0x00;
WE1 = 1;
WE2 = 0;
WE3 = 1;
P0 = duan[bai];
delay(1);
P0 = 0x00;
WE1 = 0;
WE2 = 0;
WE3 = 1;
P0 = duan[qian];
delay(1);
P0 = 0x00;
WE1 = 1;
WE2 = 1;
WE3 = 0;
P0 = duan[wan];
delay(1);
P0 = 0x00;
}
void main()
{
while(1)
{
i = 32768;
display(i);
}
}
另外在51上计数器最大能计多大的数，它的数据类型最大能定义多大的，比如我想计到50亿，然后让这个数在数码管上显示出来
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