题目 1172: 计算两点间的距离解答

解题思路:(x1-x2)^2+(y1-y2)^2=d^2

注意事项:

参考代码:

#include<iostream>

#include<cstdio>

#include<cmath>

using namespace std;

int main(){

    int x1,x2,y1,y2;

    double distance;

    while(cin>>x1>>y1>>x2>>y2){

        distance=sqrt(pow((x1-x2),2)+pow((y1-y2),2));

        printf("%.2f\n",distance);

    }

    return 0;

}