*** WARNING L16: UNCALLED SEGMENT, IGNORED FOR OVERLAY PROCESS
SEGMENT: ?PR?ER?CCC51
*** WARNING L16: UNCALLED SEGMENT, IGNORED FOR OVERLAY PROCESS
SEGMENT: ?PR?SAN?CCC51
*** WARNING L16: UNCALLED SEGMENT, IGNORED FOR OVERLAY PROCESS
SEGMENT: ?PR?SI?CCC51
出現(xiàn)了這個警告，應(yīng)該怎么修改程序？急用，求大神們幫忙！
基本功能：八個彩燈，四個按鍵。一個按鍵控制彩燈啟動和停止，一個按鍵控制彩燈正向、反向運行，一個按鍵控制彩燈奇、偶數(shù)燈亮，最后一個按鍵包含以上所有狀態(tài)。
以下是我的程序
#include<reg51.h>
#include<intrins.h>
#define unchar unsigned char
#define unit unsigned int
void delay(void);
void yi();
void er();
void san();
void si();
sbit sb1=P1^2;
sbit sb2=P1^3;
sbit sb3=P1^4;
sbit sb4=P1^5;
int n;
void delay(void)
{
unsigned int x,y;
for(x=0;x<200;x++);
for(y=0;y<250;y++);
}
void yi()
{
P0=0x7f;
delay();
P0=0xbf;
delay();
P0=0xdf;
delay();
P0=0xef;
delay();
P0=0xf7;
delay();
P0=0xfb;
delay();
P0=0xfd;
delay();
P0=0xfe;
delay();
}
void er()
{
P0=0xff;
}
void san()
{
P0=0xfe;
delay();
P0=0xfd;
delay();
P0=0xfb;
delay();
P0=0xf7;
delay();
P0=0xef;
delay();
P0=0xdf;
delay();
P0=0xbf;
delay();
P0=0x7f;
delay();
}
void si()
{
P0=0xaa;
delay();
P0=0x55;
delay();
}
void main()
{while(1)
{if(sb1==0)
yi();
}
{if(sb1==1)
er();
}
{if(sb1==0&&sb2==0)
san();
}
{if(sb1==0&&sb3==0)
si();
}
{if(sb4==0)
for(n=0;n<4;n++)
{if(n==0)
yi();
}
{if(n==1)
san();
}
{if(n==2)
si();
}
{if(n==3)
er();
}
}
}
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