C++_系列自学课程_第_12_课_结构体

#include <iostream>
#include <string>

using namespace std;

struct CDAccount
{
    double balance; //余额
    double rate;    //利息
    int       term;    //存期
};

struct Date
{
    int year;
    int month;
    int day;
};

struct Person
{
    string name;
    Date   birthday;
    CDAccount account;

};

//****************************************
void get_data(CDAccount& account);
double caculate_balance(CDAccount account);
Person get_person_data(void);
void display_person(Person* person);



//***************************************
//process entry
int main(int argc,char* argv[]) try
{
//*********************
//演示结构体的一般用法
    CDAccount marry;

    //获取数据
    get_data(marry);

    //计算利息 结构体成员赋值
    marry.balance = caculate_balance(marry);

    //输出信息
    cout<<"marry的账户余额为:"<<marry.balance<<endl;

    CDAccount bob;

    //结构体整体赋值
    bob = marry;
    
    cout<<"bob的账户余额为:"<<bob.balance<<endl ;

    //结构体初始化
    CDAccount lee = {3000,0.12,3};

    //visual c++ 不支持下面的初始化方式, g++支持，属于实现的扩展，本身不是C++的一部分功能
    /*CDAccount jack = {
                        .balance = 4000;
                        .rate = 0.5;
                        .term = 10;
                     }*/

//***************************
//演示嵌套结构体的用法
    Person dudo;

    //输入个人信息， 函数返回结构体
    dudo = get_person_data();
    
    display_person(&dudo);


    char ch;
    cin>>ch;
    return 0;
}
catch(...)
{
    cout<<"捕捉到异常"<<endl;
}


//获取数据  函数传递结构引用
void get_data(CDAccount& account)
{
    cout<<"请输入本金、利率和存期(存期以月份计算，最大为12个月):";
    cin>>account.balance;
    cin>>account.rate ;
    cin>>account.term ;
}


//计算余额  函数传递结构体
double caculate_balance(CDAccount account)
{
    double balance;

    balance = account.balance + account.balance * account.rate * account.term;

    return balance;
}

//获取个人信息
Person get_person_data(void)
{
    Person person;
    cout<<"请输入账户名称,生日(年、月、日):";
    cin>>person.name >>person.birthday.year >>person.birthday.month>>person.birthday.day ;

    cout<<"请输入"<<person.name <<"的信息,本金、利息和存期(存期最大12个月):";
    cin>>person.account.balance >>person.account.rate >>person.account.term ;

    return person;
}


//显示信息， 演示结构体指针变量的使用
void display_person(Person* person)
{
    cout<<"名字是:"<<person->name<<endl;
    cout<<"生日是:"<<person->birthday.year<<"-"<<person->birthday.month<<"-"<<person->birthday.day<<endl;
    cout<<"账户信息:"<<person->account.balance<<"\t"<<person->account.rate<<'\t'<<person->account.term<<endl;

}