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An In-Depth Understanding of Memory and Pointers in C

Structures Definition

Explore how to define and use structures in C to group variables into custom types. Understand memory layout, type aliasing, and best practices for passing structures by reference to optimize performance. This lesson helps you write clearer and more efficient code using structures.

We'll cover the following...

Introduction

Let’s say we want a program to perform some mathematical data manipulation on two-dimensional points. We may be interested in calculating values such as:

  • The distance between 2 points.
  • The midpoint of a segment, given 2 points.
  • The equation of a line, given 2 points.
  • The slope of a line.

To provide a concrete example, let’s write code to calculate the distance between 2 points. The distance between points (x1,y1)(x1, y1) and (x2,y2)(x2, y2) is (x2−x1)2+(y2−y1)2\sqrt{(x2 - x1)^{2} + (y2 - y1)^{2}} ...