本帖最后由 lettersprite 于 2016-1-12 16:50 编辑

//本程序只是不求精确的时钟程序，使用的是金沙滩工作室学习板
#include <reg52.h>sbit ADDR0 = P1^0;sbit ADDR1 = P1^1;sbit ADDR2 = P1^2;sbit ADDR3 = P1^3;sbit ENLED = P1^4;unsigned char code image[] ={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,                                                    0x80,0x90,0x88,0x83,0xC6,0xA1,0x86,0x8E};char ge,shi,bai,qian,wan,shiwan,sec;char fen=25;char xiaoshi=15;//static unsigned int shu=0;//static unsigned char i=0;void main(){    EA = 1;       //使能总中断    ENLED = 0;    //使能U4，选择LED点阵    ADDR3 = 1;    TMOD = 0x01;  //设置T0为模式1    TH0  = 0xFC;  //为T0赋初值0xFC67，定时1ms    TL0  = 0x67;    ET0  = 1;     //使能T0中断    TR0  = 1;     //启动T0        while (1)        {        ge=sec%10;        shi=sec/10%10;        bai=fen%10;        qian=fen/10%10;        wan=xiaoshi%10;        shiwan=xiaoshi/10%10;                }}/* 定时器0中断服务函数 */void InterruptTimer0() interrupt 1{    TH0  = 0xFC;  //为T0赋初值0xFC67，定时1ms    TL0  = 0x67;        static unsigned int shu=0;//定时计数        static unsigned char i=0;//数码管片选//这两个静态变量放在主程序前，程序能正常编译，但是放这里就出错，为什么？有什么问题吗？求大神指点。        if(shu==1000){shu=0;sec++;}        if(sec==60){sec=0;fen++;}        if(fen==60){fen=0;xiaoshi++;}        if(xiaoshi==24){xiaoshi=0;}        shu++;        switch (i)        {        case 0:ADDR0=0;ADDR1=0;ADDR2=0;P0=image[ge];i++;break;        case 1:ADDR0=1;ADDR1=0;ADDR2=0;P0=image[shi];i++;break;        case 2:ADDR0=0;ADDR1=1;ADDR2=0;P0=image[bai];i++;break;        case 3:ADDR0=1;ADDR1=1;ADDR2=0;P0=image[qian];i++;break;        case 4:ADDR0=0;ADDR1=0;ADDR2=1;P0=image[wan];i++;break;        case 5:ADDR0=1;ADDR1=0;ADDR2=1;P0=image[shiwan];i=0;break;        default:break;        }        }
错误提示：Build target 'Target 1'assembling STARTUP.A51...compiling lianxi.c...LIANXI.C(39): error C141: syntax error near 'static'LIANXI.C(39): error C202: 'shu': undefined identifierLIANXI.C(40): error C141: syntax error near 'static'LIANXI.C(40): error C202: 'i': undefined identifierLIANXI.C(41): error C202: 'shu': undefined identifierLIANXI.C(41): error C202: 'shu': undefined identifierLIANXI.C(45): error C202: 'shu': undefined identifierLIANXI.C(46): error C202: 'i': undefined identifierLIANXI.C(48): error C202: 'i': undefined identifierLIANXI.C(49): error C202: 'i': undefined identifierLIANXI.C(50): error C202: 'i': undefined identifierLIANXI.C(51): error C202: 'i': undefined identifierLIANXI.C(52): error C202: 'i': undefined identifierLIANXI.C(53): error C202: 'i': undefined identifierTarget not created

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