求知，数码管程序编写时数组定义问题 -

标题: 求知，数码管程序编写时数组定义问题 [打印本页]

作者: 暮云雨 时间: 2015-3-25 16:36
标题: 求知，数码管程序编写时数组定义问题
#include<reg51.h>

unsigned char  code table1[8] = {0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
unsigned char  code table2[17]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
unsigned char  code data[8];

void main()
{
unsigned char code data[8];
unsigned char i;
unsigned int j;
for(i=0;i<8;i++)
{
data[i]=table2[i]
}
while(1)
{
unsigned char a;
for(a=0;a<8;a++)
{
P1=table1[i];
P0=data[i];
j=10;
while(j--);
P0=0x00;
}
}
}

错误

compiling led1.c...
LED1.C(5): error C141: syntax error near 'data'
LED1.C(5): error C141: syntax error near '['
LED1.C(9): error C141: syntax error near 'data'
LED1.C(9): error C141: syntax error near '['
LED1.C(9): error C141: syntax error near ']'
LED1.C(10): error C141: syntax error near 'unsigned'
LED1.C(10): error C202: 'i': undefined identifier
LED1.C(11): error C141: syntax error near 'unsigned'
LED1.C(11): error C202: 'j': undefined identifier
LED1.C(12): error C202: 'i': undefined identifier
LED1.C(14): error C141: syntax error near '['
LED1.C(14): error C202: 'i': undefined identifier
LED1.C(15): error C141: syntax error near '}'
LED1.C(21): error C202: 'i': undefined identifier
LED1.C(22): error C141: syntax error near 'data'
LED1.C(22): error C202: 'i': undefined identifier
LED1.C(24): error C202: 'j': undefined identifier
Target not created

作者: liaolinhui 时间: 2015-3-26 00:29
unsigned char code data[8];
这个不能用code，code是存在ROM里面的，不能改变值，而你这个是需要改变的，所以要去掉code

作者: 野强强 时间: 2015-3-26 14:17
楼上言之有理。。。

作者: 安阳市新世纪 时间: 2015-5-23 14:54
楼上说的是呀，通常来说常量都是放在单片机ROM里的，为了区别常量变量，51单片机code及存放在单片机ROM里

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