hdoj_2001 计算两点间的距离

题目链接：http://acm.hdu.edu.cn/showproblem.php?pid=2001

 

//C++代码#include<iostream>#include<iomanip>#include<cmath>using namespace std;int main(){double a,b,c,d;while(cin>>a>>b>>c>>d){double dist=sqrt((a-c)*(a-c)+(b-d)*(b-d));cout<<fixed<<setprecision(2)<<dist<<endl;}return 0;}