C++函数与array对象

函数与array对象

前言

浮躁的人容易问：我到底应该学什么；别问，学就对了。

在C++中，类对象是基于结构的，因此结构编程方面的有些考虑因素也适用于类。

array格式

array<数据类型，元素个数>数组名称={数组元素}；

一、一个例子

该例子用一个array对象来存储一年四个季度的开支，代码如下：

#include<iostream>
#include<string>
#include<array>
using namespace std;
const int Seasons = 4;
const array<string, Seasons>Snames = {
    
    "Spring","Summer","Fall","Winter"};//定义一个array类型
void fill(array<double, Seasons>* pa);
void show(array<double, Seasons>da);
int main()
{
    
    
	array<double, Seasons>expenses;
	fill(&expenses);
	show(expenses);
	return 0;
}
void fill(array<double, Seasons>* pa)
{
    
    
	for (int i = 0; i < Seasons; i++)
	{
    
    
		cout << "Enter " << Snames[i] << " expenses:";
		cin >> (*pa)[i];
	}
}
void show(array<double, Seasons>da)
{
    
    
	double total=0.0;
	cout << "Expenses:" << endl;
	for (int i = 0; i < Seasons; i++)
	{
    
    
		cout << Snames[i] << ":" << da[i] << endl;
		total+= da[i];
	}
	cout << "Total expenses:" << total << endl;
}