keil编译流水灯程序出错 undefined identifier和syntax error near 求高手解答

程序如下:
#include<reg51.h>
void delay()
{unsigned long i;
for(i=0;i<70000;i++);
}

void main()
{
while(1)
{unsigned char led8[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
unsigned char led81[]={0x7f,0xbf,0xdf,0xef,0xf7,0xfb,0xfd,0xfe};
for(j=0;j<8;j++)
{P1=led8[j];
delay();
}
for(k=0;k<7;k++)
{P1=led81[k];
delay();
}
}
}

你忘记定义j,k了
在main下面的括号里加入unsigned char j,k;
并把
unsigned char led8[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
unsigned char led81[]={0x7f,0xbf,0xdf,0xef,0xf7,0xfb,0xfd,0xfe};
移上去


修改后的代码：
#include<reg51.h>
void delay()
{
unsigned long i;
for(i=0;i<70000;i++);
}

void main()
{
unsigned char led8[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
unsigned char led81[]={0x7f,0xbf,0xdf,0xef,0xf7,0xfb,0xfd,0xfe};
unsigned char j,k;
while(1)
{
for(j=0;j<8;j++)
{
P1=led8[j];
delay();
}
for(k=0;k<7;k++)
{
P1=led81[k];
delay();
}
}
}

jK变量要定义才行 再看看别人怎么说的。

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