Arithmetic operators - C programming | Ludu

# Arithmetic operators

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• Arithmetic operators are used frequently in order to calculate and process data in your program. You will use them a lot for different purposes and are important to understand.

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• Let's briefly look at what all operators does and what they look like

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• - subtracts numbers from each other:

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• * multiplies values:

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• / divides numbers:

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• % is called the "modulus operator" and it also performs division. However, it only returns the remainder of what's left:

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• When it comes to arithmetic, it works exactly like it does in maths. We follow the basic rules of mathematics for calculating.

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• Tip: When calculating, it is often a good habit to use paranthesis, even if the program works without them, to avoid making some basic math mistakes. Sometimes you'll want to type (10 + 3 + 5 + 7) instead of just 10 + 3 + 5 + 7 even if it seems obvious to you that they're the same!

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• ### Exercise

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• Create a program that calculates the avarage value of a bunch of numbers. If your values are $1$, $2$ and $3$, the result should be $2$.

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• Remember the arithmetic order for how the calculation works. Paranthesis, multiply/division and addition/subtraction.

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1. 1
Declare a few variables and set them to a value of your choice

2. 2

Store the calculation in another variable

3. 3

Print out the result!

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