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class_test.cpp
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class_test.cpp
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#include<iostream>
using namespace std;
class ratio
{
int num,den;
public:
ratio()
{
num=0;
den=1;
cout<<"Base class object created."<<endl;
}
~ratio()
{
}
virtual void disp();
friend ratio multiratio(ratio a,ratio b);
virtual void set_ratio(int a,int b);
};
void ratio::disp()
{
cout<<num<<"/"<<den;
cout<<"\nBase class \n"<<endl;
}
void ratio::set_ratio(int a,int b)
{
num=a;
den=b;
}
ratio multiratio(ratio a,ratio b)
{
ratio prod;
prod.num=a.num*b.num;
prod.den=a.den*b.den;
return prod;
}
class real_ratio:public ratio
{
int num,den;
public:
real_ratio()
{
num=0;
den=1;
cout<<"Derived class object is created ."<<endl;
}
~real_ratio()
{
}
void disp()
{
cout<<num<<"/"<<den;
cout<<"\nDerived class \n"<<endl;
}
virtual void set_ratio(int a,int b)
{
num=a;
den=b;
}
};
int main()
{
ratio numb1,numb2,numb3;
real_ratio numb4;
numb1.set_ratio(2,3);
numb2.set_ratio(4,5);
numb3=multiratio(numb1,numb2);
cout<<"product : ";
numb3.disp();
numb4.set_ratio(2,3);
cout<<"Derived Test"<<endl;
numb4.disp();
return 0;
}