52分 求解QAQ

qinyaoxin520 @ 2023-11-23 21:14:24

#include<bits/stdc++.h>
using namespace std;
int main(){
    double a,b;
    cin>>a;
    if(a>0&&a<5)
    {
        b=-a+2.5;
    }
    if(a>5&&a<10)
    {
        b=2-1.5*(a-3)*(a-3);
    }
    if(a<20&&a>10)
    {
        b=a/2-1.5;
    }
    cout<<fixed<<setprecision(3)<<b;
    return 0;
}

by wwqwq @ 2023-11-23 21:18:19

#include<bits/stdc++.h>
using namespace std;
int main(){
    double a,b;
    cin>>a;
    if(a>=0&&a<5)
    {
        b=-a+2.5;
    }
    if(a>=5&&a<10)
    {
        b=2-1.5*(a-3)*(a-3);
    }
    if(a<20&&a>=10)
    {
        b=a/2-1.5;
    }
    cout<<fixed<<setprecision(3)<<b;
    return 0;
}

by wwqwq @ 2023-11-23 21:18:37

@qinyaoxin520

by wwqwq @ 2023-11-23 21:19:02

分段那里有的没写=

by qinyaoxin520 @ 2023-11-23 21:51:33

@wuweiqi 谢谢大佬！！！我悟了QAQ