请问怎么编译多文件

2007-03-15 01:00:52 284 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

Python地理空间数据库之geopandas使用详解地理空间数据分析在许多领域中都有着广泛的应用，包括地理信息系统（GIS）、城市规划、环境科学、地质勘探等。Python GeoPandas是一个强大的库，旨在简化地理空间数据的处理和分析。本文将深入介绍GeoPandas库，包括其基本概念、功能特性、示例代码以及在实际应用中的应用场景。阅读详情

这个问题困扰了很久了~~~例如下面的程序有个类和主函数，我想把类放到头文件里.可是我按照书上的把类的定义部分放到.hpp然后把实现放到.cpp最后在主函数里包含头文件却老是说类没定义。大家可以用我给的代码说明一下.hpp应该放哪些内容，实现的.cpp文件又应该放哪些内容吗？？？先谢了~~~~~~~~

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circle.hpp
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#include<iostream>

const double PI =3.14152;
const float FencePrice = 3.50;
const float ConcretePrice = 0.50;

class Circle{
private:
float radius;
public:
Circle(float r);
float Circumference(void) const;
float Area(void) const;
};

Circle::Circle(float r):radius(r)
{}

float Circle::Circumference() const
{
return 2*PI*radius;
}

float Circle::Area() const
{
return PI*radius*radius;
}

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main.cpp
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#include"Circle.hpp"
#include<iostream>
#include<iomanip>
using namespace std;

int main()
{
float r;
float FenceCost,ConcreteCost;

cout.setf(ios::fixed);
cout.setf(ios::showpoint);
cout.precision(2);

cout << "Enter the radius of the pool:";
cin >> r;
Circle Pool(r);
Circle PoolRim(r + 3);

FenceCost = Pool.Circumference() * FencePrice ;
ConcreteCost = (PoolRim.Area() - Pool.Area()) *ConcretePrice;

cout << "Fencing Cost is $" << FenceCost << endl;
cout << "Concrete Cost is $" << ConcreteCost << endl;
system("pause");

return 0;

}

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