So here is our First Program.
The program is written to display "Hello World".

Here is the Output.

In this program we will add two numbers taken from the user and then we added them using the third variable.

Here is the Output.

In this program we are swapping two numbers using the third variable.

Here is the Output.

In this program we are swapping two numbers without using the third variable.

Here is the Output.

In this program user will input the value and all the even numbers upto the given number will be printed.