用c语言如何进行编程?答:示例程序如下:include <stdio.h> include <math.h> double Distance(double x1, double y1, double x2, double y2){ return sqrt(pow(x1-x2,2)+pow(y1-y2,2));} int main(){ double x1,y1;double x2,y2;double d=0;scanf("%lf%lf%lf%lf", &x1,&y1,&x2,&y2);d = ...