设计一个三角形类

最新推荐文章于 2022-10-29 21:32:15 发布

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#float #include #c

#include <iostream>

#include <cmath>

using namespace std;

class Trigle
{
public:
	void Setabc (float x,float y, float z);
	void Getabc (float *x,float *y, float *z);
	float Perimeter (void);
	float Area (void);
private:
	float a, b, c;
};

void main(void)
{
	Trigle Tri1;
	Tri1.Setabc (4,5,6);
	float x,y,z;
	Tri1.Getabc (&x,&y,&z);
	cout<<"三条边为："<<x<<'\t'<<y<<'\t'<<z<<endl;
	cout<<"三角形周长为："<<Tri1.Perimeter()<<'\t'<<"面积:"<<Tri1.Area()<<endl;
}
void Trigle::Setabc (float x,float y, float z)
{
	do 
	{
		cin>>x>>y>>z;
		a=x;
		b=y;
		c=z;
		if ( a+b>c && a+c>b && b+c>a)
			break;
	}while (1);
}
void Trigle::Getabc (float *x,float *y, float *z)
{
	*x=a;
	*y=b;
	*z=c;
}

float Trigle::Perimeter (void)
{
	int sum;
	sum=a+b+c;
	return sum;
}
float Trigle::Area (void)
{
	float p,s,m;
	p=(a+b+c)/2;
	s=p*(p-a)*(p-b)*(p-c);
	m=sqrt(s);
	return m;
}