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OS/2 Shareware BBS: 10 Tools
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sherlock.zip
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CPPTEST
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VF.CPP
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1993-04-01
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1KB
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70 lines
#include "vf.h"
/***************************/
/* Defining Static Objects */
/***************************/
int area::objectCount = 0;
int rectangle::objectCount = 0;
int triangle::objectCount = 0;
/****************************/
/* Defining the Base Class */
/****************************/
area::area(void)
{
++area::objectCount;
}
void area::setarea(double d1 , double d2)
{
dim1 = d1;
dim2 = d2;
}
void area::getdim(double &d1, double &d2)
{
d1 = dim1;
d2 = dim2;
}
double area::getarea()
{
return -1 ; /* not override */
}
/*******************************/
/* Defining a Derived class */
/*******************************/
double rectangle::getarea()
{
double d1,d2;
getdim (d1,d2);
return d1*d2;
}
rectangle::rectangle(void)
{
++rectangle::objectCount;
}
/*******************************/
/* Defining a Derived class */
/*******************************/
triangle::triangle()
{
++triangle::objectCount;
}
double triangle::getarea()
{
double d1,d2;
getdim (d1,d2);
return .5*d1*d2;
}