triangle.cpp

C++大学简明教程,解压就行没有密码。希望对大家有用

// Exercise 17.12: Triangle.cpp
// Triangle class member-function definitions.
#include <iostream> // required to perform C++-style stream I/O
#include <cmath>    // required for the sqrt function
#include "Triangle.h"  // Triangle class definition

using namespace std; // for accessing C++ Standard Library members

// Triangle constructor 
Triangle::Triangle( double side1, double side2, double side3 )
   : TwoDimensionalShape( string( "triangle" ) )  
{
   setSide1( side1 );
   setSide2( side2 );
   setSide3( side3 );

} // end Triangle constructor

// set the length of side 1
void Triangle::setSide1( double side1 )
{
    if ( side1 >= 0.0 )
    {
      sides[ 0 ] = side1;  
    } // end if
    else
    {
      sides[ 0 ] = 0.0;
    } // end else

} // end function setSide1

// return length of side 1
double Triangle::getSide1()
{
    return sides[ 0 ];

} // end function getSide1

// set the length of side 2
void Triangle::setSide2( double side2 )
{
    if ( side2 >= 0.0 )
    {
      sides[ 1 ] = side2;  
    } // end if
    else
    {
      sides[ 1 ] = 0.0;
    } // end else

} // end function setSide2

// return length of side 2
double Triangle::getSide2()
{
    return sides[ 1 ];

} // end function getSide2

// set the length of side 3
void Triangle::setSide3( double side3 )
{
    if ( side3 >= 0.0 )
    {
      sides[ 2 ] = side3;  
    } // end if
    else
    {
      sides[ 2 ] = 0.0;
    } // end else

} // end function setSide3

// return length of side 3
double Triangle::getSide3()
{
    return sides[ 2 ];

} // end function getSide3

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