第十五周实验报告（一）

三角形面积与周长计算

原创于 2012-06-17 18:56:29 发布 · 575 阅读

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MyTriangle.h

class Triangle
{
public:
	Triangle(){a = 1; b = 1; c = 1;}
	Triangle(double x, double y, double z){a = x; b = y; c = z;}
	double area(void);
	double perimeter(void);
private:
	double a, b, c;
};

MyTriangle.cpp

#include "stdafx.h"

#include <Cmath>

#include "MyTriangle.h"

double Triangle::area(void)
{
	double s = (a + b + c) / 2;
	return sqrt(s * (s - a) * (s - b) * (s - c));
}

double Triangle::perimeter(void)
{
	return a + b + c;
}

triangleDlg.cpp

void CtriangleDlg::OnBnClickedButton1()
{
	// TODO: 在此添加控件通知处理程序代码
	UpdateData();
	Triangle t1(m_a, m_b, m_c);
	m_area = t1.area();
	UpdateData(FALSE);
}

void CtriangleDlg::OnBnClickedButton2()
{
	// TODO: 在此添加控件通知处理程序代码
    UpdateData();
	Triangle t1(m_a, m_b, m_c);
	m_perimeter = t1.perimeter();
    UpdateData(FALSE);
}