Finding Determinant of 2x2 Matrix

# Introduction

In linear algebra, the determinant of a square matrix is a scalar value that can be calculated from the elements of the matrix. In this lab, we will learn how to find the determinant of a 2x2 matrix using C programming.

> Note: You need to create the file `~/project/main.c` yourself to practice coding and learn how to compile and run it using gcc.

cd ~/project
# create main.c
touch main.c
# compile main.c
gcc main.c -o main
# run main
./main