C++ Practical Section 1

1. Write a Program in C++ that print the Hello World.

Answer:

#include<iostream.h>
#include<conio.h>

Void main()
{
Cout <<"Hello World";
getch();
}

...................................................................................................................................................................

2.  Write a Program for Find the Sum of Two Numbers.

Answer:

#include<iostream.h>
#include<conio.h>

Void main()
{
float a,b;
textbackground(9);
clrscr();
Cout<<"Enter The Two Number\n";
Cin>>a>>b;
float c=a+b;
Cout<<endl<<"The Sum of "<<a<<"and "<<b<<"is"<<c;
getch();
}

...................................................................................................................................................................

3. Write a program for find the Greatest of Three Numbers.

Answer:

#include<iostream.h>
#include<conio.h>

Void main()
{
int a,b,c;
clrscr();

Cout<<"Enter The First Number";
cin>>a;
Cout<<"Enter the Second Number";
cin>>b;
Cout<<"Enter the Third Number";
cin>>c;

if(a>b)
{
if(a>c)
Cout<<"a is greatest";
else
Cout<<"c is greatest";
cin>>C>>a;
}
else
{
if(b>c)
Cout<<"b is greatest";
else
Cout<<"C is greatest";
}
getch();
}

...................................................................................................................................................................

4.  Write a Program for perform the Substraction, Addition, Multiplication and Division of Two Numbers.

Answer:

#include<iostream.h>
#include<conio.h>

Void main()
{
int a,b,ch,sum,sub,mult,div;
clrscr();
Cout<<"Enter the First Number";
cin>>a;
Cout<<"Enter the Second Number";
cin>>b;

sum=a+b;
sub=a-b;
mult=a*b;
div=a/b;

Cout<<"**************************************\n";
Cout<<"Press 1 : For Addition\n";
Cout<<"Press 2 : For Substraction\n";
Cout<<"Press 3 : For Multiplication\n";
Cout<<"Press 4 : For Division\n";

Cout<<"Enter Your Choice:";
cin>>ch;

Switch(ch)
{
Case 1 : Cout<<"Addition of Two Number="<<sum;
break;

Case 2 : Cout<<"Substraction of Two Number="<<sub;
break;

Case 3 : Cout<<"Multiplication of Two Number="<<mult;
break;

Case 4 : Cout<<"Division of Two Number="<<div;
break;

default : Cout<<"Sorry Wrong Choice";
}
getch();
}

...................................................................................................................................................................

5. Write a Program for print the digits in Words from 1-10.

Answer:

#include<iostream.h>

#include<conio.h>

Void main()

{

int num;

clrscr();

Cout<<"Enter the Number between 1-10:";

cin>>num;

if (num == 1)

Cout<<"One";

else if (num == 2)

Cout<<"Two";

else if (num == 3)

Cout<<"Three";

else if (num == 4)

Cout<<"Four";

else if (num == 5)

Cout<<"Five";

else if (num == 6)

Cout<<"Six";

else if (num == 7)

Cout<<"Seven";

else if (num == 8)

Cout<<"Eight";

else if (num == 9)

Cout<<"Nine";

else if (num == 10)

Cout<<"Ten";

else

Cout<<"Out of Range";

getch();

}

*********************************************************************************