题目内容

下列程序段for(i=0;i<100;i++)for (j=200;j>0;j--)；空语句的运行次数为？（）

A. 300
B. 0
C. 200
D. 20000

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将下面的程序补充完整：#include//定义了单片机中多数的特殊功能寄存器，包括P1____________________________;void main(){while(1){ P1 = 0xFF;//P1为单片机中特殊功能寄存器，并行I/O端口delay(1200);P1 = 0x00;delay(1200);}}//函数名：delay//函数功能：实现软件延时//形式参数：整型变量i，控制循环次数//返回值：无void delay(unsigned int i){unsigned int k;for(k = 0;k < i;k ++);}

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