啊啊啊啊啊68分

hzy0928 @ 2024-11-30 11:36:01

#include<bits/stdc++.h>
using namespace std;
int main(){
    double x;
    cin >> x;
    if(x >= 0 && x < 5){
        printf("%.3f" , -x + 2.5);
    }else if(x >= 5 && x < 10){
        printf("%.3f" , 2 - 1.5 * (x - 3) * (x * 3));
    }else{
        printf("%.3f" , x / 2 - 1.5);
    }

    return 0;
}

by 3_14 @ 2024-11-30 11:43:01

em

#include<bits/stdc++.h>
using namespace std;
double x, y;
int main(){
    cin>>x;
    if(x<5){
        y=-x+2.5;
    }else if(x<10){
        y=2-1.5*(x-3)*(x-3);
    }else{
        y=x/2-1.5;
    }
    printf("%.3lf\n",y);
    return 0;
}

by 3_14 @ 2024-11-30 11:43:40

求关

by TAOTAO2011 @ 2024-11-30 11:43:58

@hzy0928你这个第二个if错了吧

by TAOTAO2011 @ 2024-11-30 11:44:36

@hzy0928不是x*3是x-3

by 3_14 @ 2024-11-30 11:59:38

同楼上

by hzy0928 @ 2024-11-30 21:03:36

@TAOTAO2011 谢谢