不知道哪里错了，求大佬帮忙

Liuqs @ 2022-03-08 10:16:48

#include <iostream>
#include <cmath>
#include <cstdio>
using namespace std;
double sq(double x)
{
    return x*x;
}
double dis(double x1,double y1,double x2,double y2)
{return sqrt(sq(x2-x1)+sq(y2-y1));}

int main(){
double c=0,x1,y1,x2,y2,x3,y3;
cin>>x1>>y1>>x2>>y2>>y3>>y3;
c+=dis(x1,y1,x2,y2);
c+=dis(x2,y2,x3,y3);
c+=dis(x1,y1,x3,y3);
printf("%.2f",c);
return 0;
}

by JDS070115 @ 2022-03-08 10:30:19

cin >> x1 >> y1 >> x2 >> y2 >> y3 >> y3

y3 读入了 两遍 。

改一下就可以了。（码风令人感动）

by exercise @ 2022-06-12 19:18:34

#include<bits/stdc++.h> 
using namespace std;
double BBQ(double x,double y) 
{
    if (x>y)
    {
        return (x-y)*(x-y);
    }
    else
    {
        return (y-x)*(y-x);
    }
}
double a,b,c,d,e,f,g,k,l,o;
int main()
{
    cin>>a>>b>>c>>d>>e>>f;
    k=BBQ(a,c)+BBQ(b,d);
    g=sqrt(k);
    k=BBQ(f,d)+BBQ(c,e);
    l=sqrt(k);
    k=BBQ(a,e)+BBQ(b,f);
    o=sqrt(k);      
    cout<<fixed<<setprecision(2)<<g+l+o;
}

我不李姐你的代码OUO..............