AcWing 718. 实验

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AcWing 718. 实验原题链接困难

作者：

只要是你呀ღ , 2020-03-07 20:22:11 , 所有人可见 , 阅读 7131

24

20

#include<iostream>
#include<cstdio>
using namespace std;
int main()
{
    int n;
    int a;
    char t;
    int sum=0,sum1=0,sum2=0,sum3=0;//sum1表示兔子,sum2表示老鼠,sum3表示青蛙
    double s1,s2,s3;
    cin>>n;
    for(int i=1;i<=n;i++)
    {
        cin>>a>>t;
        if(t=='C')
            sum1+=a;
        else if(t=='R')
            sum2+=a;
        else
            sum3+=a;
        sum+=a;
    }
    s1=(double)sum1/(double)sum*100;
    s2=(double)sum2/(double)sum*100;
    s3=(double)sum3/(double)sum*100;
    cout<<"Total: "<<sum<<" animals"<<endl;
    cout<<"Total coneys: "<<sum1<<endl;
    cout<<"Total rats: "<<sum2<<endl;
    cout<<"Total frogs: "<<sum3<<endl;
    printf("Percentage of coneys: %.2lf %\n",s1);
    printf("Percentage of rats: %.2lf %\n",s2);
    printf("Percentage of frogs: %.2lf %\n",s3);
    return 0;
}

14 评论

成了精的咸菜 2022-12-28 21:16

用printf打印出一个%时需要printf(“%%”);

Scripts_7 2023-02-05 20:34

if else 呢里用Switch case 是不是更简洁，时间效率有变化吗

felixsnow 2023-04-02 02:10

写这个的时候没讲case……纠结这个干什么。

ZHANG._36 29天前

这个else
sum3+=a，如果t=A呢，不就是报错了，应该是else if吧

臧世滔 6个月前

#include[HTML_REMOVED]
#include[HTML_REMOVED]
int main()
{
int n,a,total=0,s1=0,s2=0,s3=0;
char t;
double p1,p2,p3;
scanf(“%d”,&n);
while(n–){
scanf(“%d%c”,&a,&t);
if(t==’C’)
s1 += a;
if(t==’R’)
s2 += a;
if(t==’F’)
s3 += a;
total=total+a;
}
p1=(s1/total)100;
p2=(s2/total)100;
p3=(s3/total)*100;
printf(“Total: %d animals\n”,total);
printf(“Total coneys: %d\n”,s1);
printf(“Total rats: %d\n”,s2);
printf(“Total frogs: %d\n”,s3);
printf(“Percentage of coneys: %.2f %%\n”,p1);
printf(“Percentage of rats: %.2f %%\n”,p2);
printf(“Percentage of frogs: %.2f %%\n”,p3);
}
兄弟们，这个错哪了呀
Total: 100 animals
Total coneys: 0
Total rats: 0
Total frogs: 0
Percentage of coneys: 0.00 %
Percentage of rats: 0.00 %
Percentage of frogs: 0.00 %
输出完是这样