两点间距离公式全部（计算两点之间的距离）

两点间距离公式全部（计算两点之间的距离）{double distance(double x1 double y1 double x2 double y2)*/#include<stdio.h>#include<math.h>

/*

函数参数：传入两点坐标

函数功能：计算平面上，两点之间的距离

返回值：返回两点之间的距离

*/

#include<stdio.h>

#include<math.h>

double distance(double x1 double y1 double x2 double y2)

{

double side1 side2 distance;

side1=fabs(x1-x2);

side2=fabs(y1-y2);

distance=sqrt(side1*side1 side2*side2);

return distance;

}

int main()

{

double x1 y1 x2 y2;

double distan;

printf("分别输入坐标x1 y1 x2 y2\n");

scanf("%lf%lf%lf%lf" &x1 &y1 &x2 &y2);

distan=distance(x1 y1 x2 y2);

printf("点(%.2lf %.2lf)到点(%.2lf %.2lf)距离为：\n%.2lf\n" x1 y1 x2 y2 distan);

getchar();

return 0;

}