how variables

"Variables" in programming are placeholders or containers that hold values or data during the execution of a program. They serve as a way to store information temporarily and allow the program to manipulate it according to different conditions or calculations. Each variable has a specific name, which is unique within its scope, and a type, which determines what kind of data it can hold (e.g., integers, strings, floating-point numbers).

Here's a basic example in Python:

x = 10     # Integer variable
y = "Hello" # String variable
age = 25.5  # Floating-point number variable

# You can then perform operations on these variables
z = x + y   # Concatenating string and integer
print(z)

In this case, `x`, `y`, and `age` are variables, with `x` holding an integer value, `y` storing a string, and `age` representing a numeric age.