An algorithm is a sequence of instructions that can be followed to solve a problem or achieve some goal, similar to a program but without a specific programming language. Variables are used in algorithms and programs to represent values like numbers, letters, or words. Variables should be named in a clear way using words or alphanumeric combinations so that their meaning and purpose is understandable.

2. Algorithm
Algorithm is writing a sequence of
instruction in word form . It is close to
writing a program but not necessarily
using a Programming language.
Best example of algorithm is recipes.

3. Variables
Are used to represent a value. The value may be
a number, letter Or word. In algebra we are
used to Variables x, y and z or a, b and c,
Sometimes using xy, xz and so on. But in
programming we used variables That are easy to
understand by using The exact word or sometimes
close to that. Thus, we use Num1 to represent
The first number to be entered, Num2 For the
second number and Sum for the sum or total of
the two numbers. You may Consider using N1
and N2 for the two Numbers and total for the sum.

4. The format of the variables is in alphabet or word
form or alpha-numeric (combination of alphabet
and numbers) with the alphabet/s. Numbers
cannot be used as variables as this will be ready
by the computer as a value. If two or more words
are to be combined to create a variable there is a
Proper way of doing this one is to use an underscore
(_) the other is simply combining the words. For
example, for account title we may use act_title or
accttitle. The use of hyphen (-) is not advisable
since this may be treated as a mathematical
operation and the words being combined will be
treated as a variables.