Encapsulation

Program:-3


#include<iostream.h>
class Bulb
{
private:
int w;
public :
void askinfo()
{
cout<<"Enter wattage:";
cin>>w;
}
void printinfo()
{
cout<<"Wattage is:"<<w<<endl;
}
};
void main()
{
Bulb k,t;
k.askinfo();
t.askinfo();
k.printinfo();
t.printinfo();
}


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Program:-4



#include<iostream.h>
class Bulb
{
private:
int w;
public:
void askinfo()
{
int x;
cout<<"Enter wattage:";
cin>>x;
if(x>=0 && x<=240)
{
w=x;
}
else
{
w=0;
}
}


void printinfo()
{
cout<<"Wattage is:"<<w<<endl;
}
};
void main()
{
Bulb k,t;
k.askinfo();
t.askinfo();
k.printinfo();
t.printinfo();
}


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