我想写用独立按键，控制液晶12864显示汉字和数字。一个键，显示一行

#include<reg51.h>#include<intrins.h>#include<stdlib.h>#define uchar unsigned char#define uint unsigned int /*端口定义*/#define LCD_data P0sbit LCD_RS = P3^5;sbit LCD_RW = P3^6;sbit LCD_EN = P3^4;sbit LCD_PSB = P3^7;sbit wela = P2^6;sbit dula = P2^7;uchar code dis[]={"我爱单片机"};uchar code dis[]={"我不会秃头"};uchar code dis[]={"我爱学习"};uchar code dis[12];void delay_1ms(uint x){uint i,j;for(j=0;j<x;j++) for(i=0;i<110;j++);}/*写指令数据到LCD*//*RS=L，RW=L,E=高脉冲，D0-D7=指令码。*/void write_cmd(uchar cmd){ LCD_RS=0; LCD_RW=0; LCD_EN=0; P0=cmd; delay_1ms(5); LCD_EN=1; delay_1ms(5); LCD_EN=0;}/*写显示数据到LCD*//*RS=H,RW=L,E=高脉冲，D0-D7=数据。*/void write_dat(uchar dat){ LCD_RS=1; LCD_RW=0; LCD_EN=0; P0=dat; delay_1ms(5); LCD_EN=1; delay_1ms(5); LCD_EN=0;}/*设定显示位置*/void lcd_pos(uchar X,uchar Y){ uchar pos; if(X==0) {X=0x80;}else if(X==1) {X=0x90;}else if(X==2) {X=0x88;}else if(X==3) {X=0x98;}pos=X+Y;write_cmd(pos); //显示地址}/*LCD初始化设定*/void lcd_init(){ LCD_PSB=1; //并口方式 write_cmd(0x30); //基本指令操作 delay_1ms(5); write_cmd(0x0C); //显示开，关光标 delay_1ms(5); write_cmd(0x01); //清除LCD的显示内容 delay_1ms(5); }/*主程序*/main(){ uchar i; wela=0; dula=0; delay_1ms(10); //延时 lcd_init(); //初始化LCD lcd_pos(1,0); //设置显示位置为第二行的第一个字符 i=0; while(dis2[i]!='\0') { write_dat(dis2[i]); //显示字符 i++; } lcd_pos(2,0); //设置显示位置为第三行的第1个字符 i=0; while(dis3[i]!='\10'); { write_dat(dis3[i]); //显示字符 i++ } lcd_pos(3,0); //设置显示位置为第四行的第一个字符 i=0; while(dis4[i]!='\0') { write_dat(dis4[i]); i++; }} 老是提示我有错 button.c(15): error C279: 'dis': multiple initialization
button.c(16): error C279: 'dis': multiple initialization
button.c(86): error C202: 'dis2': undefined identifier
button.c(88): error C202: 'dis2': undefined identifier
button.c(93): error C202: 'dis3': undefined identifier
button.c(95): error C202: 'dis3': undefined identifier
button.c(97): error C141: syntax error near '}'
button.c(100): error C202: 'dis4': undefined identifier
button.c(102): error C202: 'dis4': undefined identifier