基本数据类型转换为类类型

例题：如下列代码通过用构造函数的方式，将一个double的数据变成一个money类

#include <iostream>
using namespace std;
class crmb
{
private:
    int yuan;
    int jiao;
    int fen;
public:
    crmb(int y=0,int j=0,int f=0);
    crmb(double);
    crmb(const crmb & );
    void print();
};
crmb::crmb(int y,int j,int f):yuan(y),jiao(j),fen(f){}

crmb::crmb(double money)
{
    int ntem=money*100;
    yuan=ntem/100;
    jiao=(ntem%100)/10;
    fen=ntem%10;
}
crmb::crmb(const crmb & m)
{
    yuan=m.yuan;
    jiao=m.jiao;
    fen=m.fen;
}
void crmb::print()
{
    cout<<yuan<<"元"<<jiao<<"角"<<fen<<"分"<<endl;
}
int main()
{
    crmb r;
    r=1.25;
    r.print();
    return 0;
}

运行结果：