求助 液晶1602不显示

源代码
#include<reg52.h>
#define uint unsigned int
sbit lcdrs = P2^6;
sbit lcdrw = P2^5;
sbit lcden= P2^7;
uint code table[]={"I LOVE MCU"};
uint num;
void delay(uint ms)
{
uint x,y;
for(x=ms;x>0;x--)
for(y=124;y>0;y--);
}
void write_com(uint com)
{
lcdwr=0;
lcdrs=0;
lcden=0;
P0=com;
delay(5);
lcden=1;
delay(5);
lcden=0;
}
void write_data(uint date)
{
lcdrs=1;
lcdwr=0;
lcden=0;
P0=date;
delay(5);
lcden=1;
delay(5);
lcden=0;
}
void inint()
{
lcden=0;
write_com(0x38);
delay(5);
write_com(0x38);
delay(5);
write_com(0x0f);
write_com(0x06);
write_com(0x01);
}
void main()
{
inint();
write_com(0x80);
for(num=0;num<10;num++)
{
write_data(table[num]);
delay(5);
}
write_com(0x80+0x40);
for(num=0;num<10;num++)
{
write_data(table[num]);
delay(5);
}
while(1);

}

前面声明的位定义，我是按电路原理图写的 编译时出现两个警告：
warning L1:unresolved external symbol
symbol:?c_start
module:startup.obj(?c_startup)
warning L2:reference made to unresolved external
symbol:?c_start
module:startup.obj(?c_startup)
address:080AH
各位高手帮忙解决一下 谢谢了