两点距离问题

//两点距离问题#include <iostream>#include <Cmath>using namespace std;int main(){double a,b,c,d,e,r,t,y,u,o;cout<<"请依次输入两点的横坐标与纵坐标:"<<endl;cin>>a>>b>>c>>d;e=a-c;r=pow(e,2);t=b-d;y=pow(t,2);u=r+y;o=pow(u,1/2);cout<<"两点间的距离为:"<<o<<endl;return 0;}