C++ 第五次实验Part2

#include <bits/stdc++.h>
using namespace std;
struct Rule
{
    int m;
    int r;
}rules[105];
void inputRules (Rule rules [],int n)
{
    for(int i=1;i<=n;i++)
    {
        cout<<"请输入第"<<i<<"条规则：";
        int m,r;
        cin>>m>>r;
        rules[i].m=m;
        rules[i].r=r;
    }
}
void inputmenu(Rule rules [],int n)
{
    cout<<"纳税规则如下："<<endl;
    cout<<"纳税线\t税率"<<endl;
    for(int i=1;i<=n;i++)
    {
        cout<<rules[i].m<<"\t"<<rules[i].r<<endl;
    }
}
double computeTax(Rule rules[],int n,int income)
{
    if(income <= rules[1].m )
    {
        //cout<<"再见";
        return 0;
    }
    else if(income > rules[n].m)
    {
        double sum=0;
        for(int i=1;i<n;i++)
        {
            sum+=(rules[i+1].m-rules[i].m)*rules[i].r;
        }
        sum+=(income - rules[n].m)*rules[n].r;
        return sum/100;
    }
    else
    {
        int x=0;
        double sum=0;
        for(int i=1;i<=n;i++)
        {
            if(income <= rules[i+1].m && income >rules[i].m )
            {
                x=i;
                sum+= (income - rules[i].m)*rules[i].r;
                break;
            }
        }
        for(int i=1;i<x;i++)
        {
            sum+=(rules[i+1].m-rules[i].m)*rules[i].r;
        }
        return sum/100;
    }
}

void outputsum(Rule rules[],int n,int income)
{
    if(income > rules[n].m)
    {

    if(n==1)
        {
            printf("(%d-%d)*%d/100\n",income,rules[1].m,rules[1].r);
        }
        else
        {
            printf("[(%d-%d)*%d)",income,rules[n].m,rules[n].r);
            for(int i=n;i>1;i--)
                printf("+((%d-%d)*%d)",rules[i].m,rules[i-1].m,rules[i-1].r );
            printf("]/100\n");
        }
    }
    else
    {
        int x=0;
        double sum=0;
        for(int i=1;i<=n;i++)
        {
            if(income <= rules[i].m && income >rules[i-1].m )
            {
                x=(i-1);
                break;
            }
        }
        printf("[(%d-%d)*%d)",income,rules[x].m,rules[x].r);
            for(int i=x;i> 1;i--)
                printf("+((%d-%d)*%d)",rules[i].m,rules[i-1].m,rules[i-1].r );
            printf("]/100\n");
    }
}


int main()
{
    int n;
    cout<<"请输入规则的条数：";
    cin>>n;
    inputRules(rules,n);
    inputmenu(rules,n);

    while(1)
    {
        int income;
        cout<<"请输入您的收入：";
        cin>>income;

        if(income ==-1)
            break;
        double t=0;
        t=computeTax(rules,n,income);
        cout<<"您的收入是"<<income<<",";
        printf(" 应交所得税：%0.2f元\n",t);
        if(t!=0)
        outputsum(rules,n,income);
    }
    cout<<"再见"<<endl;
    return 0;
}