Constant Contact connects the dots with marketing advice and resources built for you

Nov 1, 2025 · In C programming, const is a keyword used to declare a variable as constant, meaning its value cannot be changed after it is initialized. It is mainly used to protect variables …

Another thing about constant variables, is that it is considered good practice to declare them with uppercase. It is not required, but useful for code readability and common for C programmers:

continual, continuous, constant, incessant, perpetual, perennial mean characterized by continued occurrence or recurrence. continual often implies a close prolonged succession or recurrence.

CONSTANT definition: not changing or varying; uniform; regular; invariable. See examples of constant used in a sentence.

The mathematical constant pi represents the ratio of a circle's circumference to its diameter. We assume that the demand rate is known and is a constant.

A constant in C is a user-assigned name to a location in the memory, whose value cannot be modified once declared. This is in contrast to a variable in C, which is also a named memory …

A constant is an expression that stands for a specific value by explicitly representing the desired value. C allows constants for numbers, characters, and strings.

The PI symbolic constant makes your code more readable because it tells you the value and its meaning. Also, if a constant is used in several places, it’s better to use a symbolic constant …

6 days ago · You’ll learn how constants protect your data and how literals represent fixed values in your code. 📌 What You’ll Learn in This Video: What are constants in C? Types of constants ...