5-3 使用函数计算两点间的距离

//使用函数计算两点间的距离

#include<stdio.h>
#include<math.h>

double dist(double x1,double y1,double x2,double y2);
int main(int argc,char const *argv[])
{
double x1,x2,y1,y2;
printf("请给定平面任意两点坐标:");
scanf("%lf%lf%lf%lf",&x1,&y1,&x2,&y2);

printf("(%.2f,%.2f)和(%.2f,%.2f)之间的距离:%.2f\n",x1,y1,x2,y2,dist(x1,y1,x2,y2));

return 0;
}

double dist(double x1,double y1,double x2,double y2)
{
double d;
d=sqrt(pow(x1-x2,2)+pow(y1-y2,2));

return d;
}