Keil直接显示target not created 是什么

91f04b898ce02dca

• 2020-07-18

#include <reg52.h>#define uchar unsigned char#define uint unsigned intsbit S1=P3^0;sbit flag=P3^7;//???ж?????????     void delay(uint z){uint xy;for(x = z; x > 0; x--)  for(y = 114; y > 0 ; y--);   }//?ж?????void int1Init(){EA = 1;//?????ж?EX1 = 1;//?????ж?1IT = 1;//???ж?1????????}void int1() interrupt 2{P1=~P1;} void main(){int1Init();while (1){  if(S1==0)  {    delay(20);//????????   if (S1==0)   {    flag=1;    flag=0;   ?? while (S1==0);//??????   }  } } }