C++代码

//判断特简化版,会用到循环
//望大家指导
#include<bits/stdc++.h>
using namespace std;
double a[5]={0,400.00,800.00,1200.00,2000.00};
double b[5]={0.15,0.12,0.10,0.07,0.04};
double x;
double ans,sum;
int res;
int main()
{
    cin>>x;
    if(x<=a[4])
    {
        for(int i=0;i<5;i++)
        {
            if(i!=4&&x>a[i]&&x<=a[i+1])
            {
                sum=x*b[i];
                ans=x+sum;
                res=b[i]*100;
            }
        }
    }
    else
    {
        sum=x*b[4];
        ans=x+sum;
        res=b[4]*100;
    }
    printf("Novo salario: %.2lf\n",ans);
    printf("Reajuste ganho: %.2lf\n",sum);
    printf("Em percentual: %d %\n",res);
    return 0;
}
//不需要多重判断