单片机C程序怎么在这里面左移完了，接右移，要怎么写

Question

#include<reg52.h>
#include<intrins.h>
#define uint unsigned int
#define uchar unsigned char
void delay(uint);
uchar a,b;
void delay(uint x)
{
uint i,j;
for(i=x;i>0;i--)
for(j=110;j>0;j--);
}
void main()
{
a=0xfe;
while(1)
{
P1=a;
delay(900);
a=_crol_(a,1);
}
}

Answer 1

#include<reg52.h>
#include<intrins.h>
#define uint unsigned int
#define uchar unsigned char
void delay(uint);
uchar a, b;
void delay(uint x)
{
uint i, j;
for(i = x; i > 0; i--) for(j = 110; j > 0; j--);
}
void main()
{
char i;
a = 0xfe;
while(1) {
for (i = 0; i < 8; i++) { //循环8次.
P1 = a; delay(900);
a = _crol_(a, 1); //左移1位.
}

for (i = 0; i < 8; i++) { //循环8次.
P1 = a; delay(900);
a = _cror_(a, 1); //右移1位.
}
}
}本回答被提问者采纳

Answer 2

C语言里，“>>”为右移，“<<”为左移