Final answer:
The purpose of using variables in programming is to store and manipulate data. Variables can be used to calculate equations and define functions.
Step-by-step explanation:
The purpose of using variables in programming is to store and manipulate data. Variables allow programmers to store values that can be used later in the program. They can hold different types of data, such as numbers, text, or boolean values.Variables can be used to calculate equations by assigning values to different variables and performing mathematical operations on them. For example, a program can calculate the area of a rectangle by storing the length and width in variables and multiplying them together.Variables are also used to define functions, which are reusable blocks of code that perform a specific task. Functions can take input values through parameters, which are essentially variables, and return output values.