Checking Sparse Matrix

# Introduction

Sparse matrix is a matrix in which number of 0's is greater than the number of non-zero elements. In this step-by-step lab, we will learn how to check whether a two-dimensional array is a sparse matrix or not 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