5-3.txt

介绍C程设计的一典型案例：例如编写一些小游戏

#include<stdio.h>
#include<math.h>
double dist(double x1,double y1,double x2,double y2);
int main(void)
{
	double x1,y1,x2,y2,distance;
	printf("Input(x1,y1):");
	scanf("%lf%lf",&x1,&y1);
	printf("Input(x2,y2):");
	scanf("%lf%lf",&x2,&y2);
	distance=dist(x1,y1,x2,y2);
	printf("distance=%.2lf\n",distance);
	return 0;
}
double dist(double x1,double y1,double x2,double y2)
{
	double z;
	z=sqrt(pow(x1-x2,2)+pow(y1-y2,2));
	return z;
}