单片机c语言,设计一个计数器,中断一次,数码管数字从0起加1, 4位的数 ...答:t=0;f=1;//每次长时间的溢出,就置一个标记,以便主程序处理 } } /***数码管扫描***/ void x8led(unsigned long ddd){ unsigned char q,r=0;unsigned char l[11]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x7f};//0-9的字段码 unsigned char xx[8]={0,0,...
纯C语言实现图像处理?答:printf("theshold [0,255]:");scanf("%d",&t);} if (((fi=fopen(fin,"rb"))==NULL)||((fo=fopen(fon,"wb"))==NULL)){ puts("\nfile open failed");return;} fseek(fi,18L,SEEK_SET);fread(&w,sizeof(long),1,fi);fread(&h,sizeof(long),1,fi);fseek(fi,0L,SEEK_...
用C语言给单片机编程时,主函数中的变量为什么都得定义成全局变量_百 ...答:unsigned char count=0;unsigned char second=0;unsigned char seg[]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F,0x40};unsigned char seg1[]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x98};Delay_1s() //500m秒延时子程序 {unsigned char l,i,n;for(...
C语言,一字符串存放在字符数组a中,将字符数组a中下标值为偶数的元素按...答:假定有: char a[20]="zabkam";a 是字符数组,它的下标从0起,到19为止,有 a[0],a[1],a[2],a[3],a[4],...a[19];下标值为偶数 指 a[0],a[2],a[4],a[6],...a[18] 这些元素。程序如下:include <stdio.h> int main(){ char a[20]="zabkam",t;int i,j,L...