为啥我每次用结构体都出错？

equipy_rrt @ 2023-11-26 14:43:17

#include<iostream>
#include<cmath>
using namespace std;

struct place{
    float x,y;
} pot[5];

float squ(float x){
    return pow(x,2);
}

float dis(float a,float b,float c,float d){
    return sqrt(squ(a-b)+squ(c-d));
}

int main(){
    float ans=0;
    for(int i=1;i<=3;i++) cin>>pot[i].x>>pot[i].y;
    ans+=dis(pot[2].x,pot[1].x,pot[2].y,pot[1].y);
    ans+=dis(pot[3].x,pot[2].x,pot[3].y,pot[2].y);
    ans+=dis(pot[3].x,pot[1].x,pot[3].y,pot[1].y);
    cout<<ans;
    return 0;
}

by FurippuWRY @ 2023-11-26 14:44:17

为什么要用结构体

by NaCl_0_9H2O @ 2023-11-26 14:45:19

//ac
#include<bits/stdc++.h>
using namespace std;
double dis(double a,double b,double c,double d)
{
    double a1=sqrt((c-a)*(c-a)+(d-b)*(d-b));
    return a1;
}
int main()
{
    double x1,x2,y1,y2,z1,z2,sum=0;
    cin>>x1>>x2>>y1>>y2>>z1>>z2;
    sum+=dis(x1,x2,y1,y2);
    sum+=dis(x1,x2,z1,z2);
    sum+=dis(z1,z2,y1,y2);
    cout<<fixed<<setprecision(2)<<sum;
    return 0;
}

副:好像用不着结构体

by equipy_rrt @ 2023-11-26 14:52:25

我只想知道错在哪里而已······

by Find_NICK @ 2023-11-26 14:58:14

float精度问题