An introductory course on computers and programming focusing on logic building and problem-solving skills through hands-on exercises.

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, without using a third temporary variable.

## Input

You take the numbers *n1* and *n2* as the input.

## Output

The output is two variables with their values swapped.

![](/api/collection/10370001/5734049529200640/page/6091931739226112/image/6745249851375616)

Exchange the values of two variables without using an extra variable. We will still write pseudocode and draw a flowchart of the solution.

Introduction

Getting to Know Computers

Problem Solving

Variables

Decision in Programs

Repetition in Programs

Conclusion

Challenge: Swap the Values Without Using an Extra Variable