求 一个C语言程序使STC89C52单片机P2.0引脚输出方波~在线等

#include #define uint unsigned int #define uchar unsigned char sbit D1=P2^0; void delay(uint); void main() { while(1) { D1=0; delay(100); D1=1; delay(100); } } void delay(uint z) { uint x; uchar y; for(x=z;x>0;x--)