Gain insights into basic computer anatomy, binary systems, and program lifecycles. Delve into logic building and core programming concepts with hands-on exercises and quizzes to reinforce learning.

This language-agnostic course is your guide to programming and acquiring problem-solving skills. You will start reviewing the anatomy of computers and the binary number system. You will then look at the lifecycle of a program before moving on to the core concepts of programming. Overall, the primary focus of this course is logic building within the context of computer science and programming.

Throughout each chapter, you will get hands-on experience with exercises and quizzes to solidify what you’ve learned. If you’re looking to build strong programming fundamentals then this course is the perfect place to start.

Introduction to Computers & Programming

# Problem statement

You have two variables *n1* and *n2* containing two numbers, and you want to swap the values that they hold. 

# The main steps in problem-solving

## Understand the problem

Carefully read the problem statement and, think about the desired output. The output should be the two variables with their values swapped. For instance, if *n1* contains 10 and *n2* contains 20, after swapping the values *n1* should contain 20 and *n2* should contain 10.

## Come up with a practical solution

Pick two numbers. Suppose *n1* contains 1, and *n2* contains 4. Think of ways to swap the values. For example, we can save the value in *n1* someplace else, store the value of *n2* in *n1*, get the old value of *n1*, and store the old value of *n1* in *n2*. 

Click on the boxes below to change the value of the two numbers *n1* and *n2* (you can enter values between -10000 and 10000, both inclusive) and hit the **Done** button to see how it works:



Learn to write pseudocode and create a flowchart for swapping the values of two variables.

Introduction

Getting to Know Computers

Problem Solving

Variables

Decision in Programs

Repetition in Programs

Conclusion

Swap the Values of Two Variables

Problem statement

The main steps in problem-solving

Understand the problem