C++primer plus 6th 第7章7.8b编程答案

最新推荐文章于 2025-12-01 22:16:11 发布

原创最新推荐文章于 2025-12-01 22:16:11 发布 · 217 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#c++

本文通过一个具体的C++程序示例，详细讲解了如何使用结构体和指针进行数据输入和输出操作，包括定义结构体、使用指针传递结构体变量以及通过指针访问结构体成员。

#include <iostream>
using namespace std;
const int seasons=4;
const char *snames[seasons]={
    "Spring","Summer","Fall","Winter"
};
struct expenses{
       double expen[4];
   };
void fill(expenses *ar);
void show(expenses * ar);;
int main() {
    expenses ex;
    fill(&ex);
    show(&ex);
    return 0;
}
void fill(expenses *ar)
{
    for(int i=0;i<seasons;++i)
    {
        cout<<"Enter "<<snames[i]<<" expenses: ";
        cin>>ar->expen[i];
    }
}
void show(expenses * ar)
{
    double total=0.0;
    cout<<"\nEXPENSES\n";
    for(int i=0;i<seasons;++i)
    {
        cout<<snames[i]<<":$ "<<ar->expen[i]<<endl;
        total+=ar->expen[i];
    }
    cout<<"Total Expenses: $"<<total<<endl;
}