實驗報告5-2

 

#include <iostream>
#include <cmath>
using namespace std;
class Triangle
{
public:

    float perimeter(void);
    float area(void);
    void showMessage();
    Triangle(float x=1,float y=2,float z=2);
private:
    float a,b,c;
};
void main()
{
    Triangle Tri1;
    Tri1.showMessage();


}
float Triangle::perimeter(void)
{
    return (a+b+c);
}
float Triangle::area(void)
{
    float s,m;
    s=(a+b+c)/2;
    m=sqrt(s*(s-a)*(s-b)*(s-c));
    return m;
}
void Triangle::showMessage()
{
    cout<<"三角形的三邊爲： "<<a<<'\t'<<b<<'\t'<<c<<endl;
    cout<<"該三角形的周長爲："<<perimeter()<<'\t'<<"面積爲："<<area()<<endl;
}
Triangle::Triangle(float x,float y,float z)
{
    a=x;
    b=y;
    c=z;
}

#include <iostream> #include <cmath> using namespace std; class Triangle { public: float perimeter(void); float area(void); void showMessage(); Triangle(float x=1,float y=2,float z=2); private: float a,b,c; }; void main() { Triangle Tri1; Tri1.showMessage(); } float Triangle::perimeter(void) { return (a+b+c); } float Triangle::area(void) { float s,m; s=(a+b+c)/2; m=sqrt(s*(s-a)*(s-b)*(s-c)); return m; } void Triangle::showMessage() { cout<<"三角形的三邊爲： "<<a<<'\t'<<b<<'\t'<<c<<endl; cout<<"該三角形的周長爲："<<perimeter()<<'\t'<<"面積爲："<<area()<<endl; } Triangle::Triangle(float x,float y,float z) { a=x; b=y; c=z; }