5th week Item 3-Programs that organize multiple classes with multiple Files-object Count Group members

   /* Copyright (c) 2015, Yantai University School of Computer   * All rights reserved.   * File name: Test.cpp   *:    Liu Chang    * completion Date: April 5, 2015   * version number: v1.0   *  * Problem Description: This project design a triangle class whose data members are no longer the edge length of the triangle three edges , but the three vertices of a triangle.   using the Design triangle class, input the three vertices of the triangle, find out its area, perimeter, and determine whether it is right triangle and isosceles triangle. The   Project 2 is implemented in the form of "multiple files per project", where the declarations of two classes are placed in the same. h file, each of which has a file for the member function of each class   , and a file for the main () function. Appreciate the advantages of this arrangement.  * Input Description: Three vertices of the input triangle; * Program output: Output its area, perimeter, and determine if it is right triangle and isosceles triangle.

The code is as follows:

(1) main.cpp

#include <iostream> #include "CPointandCTriangle.h" using namespace Std;int Main () {    Cpoint x, y, Z;    X.input ();    Y.input ();    Z.input ();    Ctriangle Tri1 (x, y, z);    cout<< "The circumference of the triangle is:" <<tri1.perimeter () << ", Area:" <<tri1.area () <<endl<<endl;    if (Tri1.isrighttriangle () &&tri1.isisoscelestriangle ())        cout<< "The triangle is isosceles right triangle." <<endl;    else if (Tri1.isrighttriangle ())        cout<< "The triangle is right triangle." <<endl;    else if (Tri1.isisoscelestriangle ())        cout<< "The triangle is isosceles triangle." <<endl;    else        cout<< "The triangle is neither isosceles triangle nor right triangle." <<endl;    return 0;}

(2) CPointandCTriangle.h

#ifndef cpointandctriangle_h_included#define cpointandctriangle_h_includedclass cpoint{private:double x;                                horizontal double y;    Ordinate Public:cpoint (double xx=0,double yy=0);        Double Distance1 (Cpoint p) const;    The distance between two points.                            void input ();    Enter the coordinate point in X, y form.                           void output (); Output coordinate points in (x, y)};class ctriangle{public:ctriangle (Cpoint &x,cpoint &y,cpoint &z): A (×), B (y), C (Z) {}//given three    The constructor of the point is void Settriangle (Cpoint &x,cpoint &y,cpoint &z);                                      float perimeter (void);                                           Calculates the circumference of the Triangle float area (void);                                     Calculates and returns the area of the triangle bool Isrighttriangle ();                                 Whether it is right triangle bool Isisoscelestriangle ();                                               Whether it is isosceles triangle Private:cpoint a,b,c; Three vertices}; #endif//Cpointandctriangle_h_included 

(3) Cpoint.cpp:

#include <iostream> #include "CPointandCTriangle.h" #include <cmath>using namespace std; Cpoint::cpoint (double xx,double yy) {    x=xx;    Y=yy;} Double Cpoint::D Istance1 (Cpoint p) const{    double D;    D=sqrt ((p.x-x) * (p.x-x) + (p.y-y) * (p.y-y));    return D;} void Cpoint::input () {    char C;    cout<< "input x, Y (in the form of X, y):";    while (1)    {        cin>>x>>c>>y;        if (c== ', ') break            ;        else            cout<< "input format is not correct, please reenter:";    }} void Cpoint::output () {    cout<< "(" <<x<< "," <<y<< ")" <<ENDL;}

(4) CTriangle.cpp:

#include <iostream> #include "CPointandCTriangle.h" #include <cmath>using namespace std;void ctriangle::    Settriangle (Cpoint &x,cpoint &y,cpoint &z) {a=x;    B=y; C=z;} Float Ctriangle::p erimeter (void) {return (A.distance1 (B) +b.distance1 (C) +c.distance1 (A));    float Ctriangle::area (void) {double A=b.distance1 (C), B=c.distance1 (a), C=a.distance1 (B);    Double p = (A + B + c)/2; return sqrt (P * (p-a) * (p-b) * (P-C));}    BOOL Ctriangle::isrighttriangle () {double A=b.distance1 (C), B=c.distance1 (a), C=a.distance1 (B);    Double max=a;    if (B>max) max=b;    if (C>max) max=c; if ((max==a&& ((b*b+c*c-a*a) <1e-7)) | | (max==b&& ((a*a+c*c-b*b) <1e-7)) | |        (max==c&& ((a*a+b*b-c*c) <1e-7)))    return true; else return false;}    BOOL Ctriangle::isisoscelestriangle () {double A=b.distance1 (C), B=c.distance1 (a), C=a.distance1 (B); if (a==b| | b==c| |    A==C) return true; else return false;}

Operation Result:

Summary of Knowledge points:

Experience multi-file organization operations again

5th week Item 3-Programs that organize multiple classes with multiple Files-object Count Group members