C++ : Friend Function 4

Question:4
Class Distance (km, m and cm)
C++ program to declare a class named distance with attributes as km, m and cm. Take input for two distances calculate and display their sum.
Sol:

```#include<iostream>
#include<conio.h>
using namespace std;
class distance1
{
private:
int km,m,cm;
public:
void show();
};
{
cout<<"Enter km, m and cm ";
cin>>km>>m>>cm;
}
void distance1::show()
{
cout<<"km "<<km<<" m "<<m<<" cm "<<cm<<endl;
}
{
distance1 t;
t.km=d1.km+d2.km;
t.m=d1.m+d2.m;
t.cm=d1.cm+d2.cm;
if(t.cm>=100)
{
t.m=t.m+t.cm/100;
t.cm=t.cm%100;
}
if(t.m>=1000)
{
t.km=t.km+t.m/1000;
t.m=t.m%1000;
}
return(t);
}
int main()
{
/* clrscr(); */
distance1 e1,e2,e3;
e1.show();e2.show();
e3.show();
getch();
return(0);
} ```
```/* Output */

Enter km, m and cm 5 200 40
Enter km, m and cm 6 900 65
km 5 m 200 cm 40
km 6 m 900 cm 65
km 12 m 101 cm 5
```

Question:5
Class Distance (km, m, cm and mm)
C++ program to declare a class named distance with attributes as km, m, cm and mm. Take input for two distances calculate and display their sum.
Sol:

Solution In CodeBlocks/DevC++

```#include<iostream>
#include<conio.h>
using namespace std;
class distance1
{
private:
int km,m,cm,mm;
public:
void show();
};
{
cout<<"Enter km, m, cm and mm ";
cin>>km>>m>>cm>>mm;
}
void distance1::show()
{
cout<<"km "<<km<<" m "<<m<<" cm "<<cm<<" mm "<<mm<<endl;
}
{
distance1 t;
t.km=d1.km+d2.km;
t.m=d1.m+d2.m;
t.cm=d1.cm+d2.cm;
t.mm=d1.mm+d2.mm;
if(t.mm>=10)
{
t.cm=t.cm+t.mm/10;
t.mm=t.mm%10;
}
if(t.cm>=100)
{
t.m=t.m+t.cm/100;
t.cm=t.cm%100;
}
if(t.m>=1000)
{
t.km=t.km+t.m/1000;
t.m=t.m%1000;
}
return(t);
}
int main()
{
/* clrscr(); */
distance1 e1,e2,e3;
e1.show();e2.show();
e3.show();
getch();
return(0);
} ```
```/* Output */

Enter km, m, cm and mm 5 400 20 9
Enter km, m, cm and mm 8 500 90 5
km 5 m 400 cm 20 mm 9
km 8 m 500 cm 90 mm 5
km 13 m 901 cm 11 mm 4```

Solution In Turboc3

```/* this program is developed in turboc3 */
#include<iostream.h>
#include<conio.h>
class distance
{
int km,m,cm,mm;
public:
void show();
};
{
cout<<"Enter km,m,cm,mm ";
cin>>km>>m>>cm>>mm;
}
void distance::show()
{
cout<<km<<" "<<m<<" "<<cm<<" "<<mm<<endl;
}
{
distance t;
t.km=d1.km+d2.km;
t.m=d1.m+d2.m;
t.cm=d1.cm+d2.cm;
t.mm=d1.mm+d2.mm;
if(t.mm>=10)
{
t.cm=t.cm+t.mm/10;
t.mm=t.mm%10;
}
if(t.cm>=100)
{
t.m=t.m+t.cm/100;
t.cm=t.cm%100;
}
if(t.m>=1000)
{
t.km=t.km+t.m/1000;
t.m=t.m%1000;
}
return(t);
}
void main()
{
clrscr();
distance e1,e2,e3;
e1.show();e2.show();
e3.show();
getch();
}
```
```/* Output */

Enter km, m, cm and mm 5 400 20 9
Enter km, m, cm and mm 8 500 90 5
km 5 m 400 cm 20 mm 9
km 8 m 500 cm 90 mm 5
km 13 m 901 cm 11 mm 4```

Question:6
Class weight (kg and g)
C++ program to declare a class named weight with attributes as kg and g. Take input for two weights calculate and display their sum.
Sol:

```#include<iostream>
#include<conio.h>
using namespace std;
class weight1
{
private:
int kg,g;
public:
void show();
};
{
cout<<"Enter kg and g ";
cin>>kg>>g;
}
void weight1::show()
{
cout<<"kg "<<kg<<" g "<<g<<endl;
}
{
weight1 t;
t.kg=d1.kg+d2.kg;
t.g=d1.g+d2.g;
if(t.g>=1000)
{
t.kg=t.kg+t.g/1000;
t.g=t.g%1000;
}
return(t);
}
int main()
{
/* clrscr(); */
weight1 e1,e2,e3;
e1.show();e2.show();
```/* Output */