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Beginner Topic 3 of 54 Programming Fundamentals

Operators

Symbols that perform arithmetic, comparison or logical computation on operands.

How it works

Operators combine operands into new values. The main families are arithmetic (+ - * / %), comparison (== != < >), logical (and, or, not) and bitwise (& | ^ << >>). Each operator has a precedence and associativity that decide evaluation order in expressions such as a + b * c, and parentheses override both. Some languages also support operator overloading so that + can mean string concatenation or vector addition.

Step-by-step walkthrough

  1. Operands a and b are plain values.
  2. Multiplication binds tighter than addition, so a * b runs first.
  3. Then the product 24 is combined with 2 by the plus operator.
  4. Parentheses would override the precedence order.

Where it is used

Operators appear in every expression, from computing averages and discounts to testing x % 2 == 0 for evenness, masking bits in flags or combining conditions with and/or. Short-circuit evaluation of logical operators is widely used to guard against null values, as in p != null and p.value > 0.

Common pitfall

Confusing = (assignment) with == (comparison) is a classic slip. Integer division gives surprising results, such as 7 / 2 equal to 3 in C and Java. Relying on remembered precedence instead of parentheses leads to wrong answers, and mixing bitwise and logical operators produces bugs that compile cleanly.

Where it fits in the course

Operators is topic 3 of 54 in Programming Fundamentals, rated Beginner. It follows Data Types. The next topic is Expressions.

Practice and explore

How to study this topic

  1. Read the explanation above and restate the definition in your own words.
  2. Open the interactive lesson and answer its mini quiz.
  3. Read the common pitfall, then write a short example that avoids it.
  4. Check your understanding in the Programming Fundamentals quiz, and revisit the topic if you miss a question.

Frequently asked questions

What is Operators?
Symbols that perform arithmetic, comparison or logical computation on operands. It belongs to Programming Fundamentals and is a beginner-level topic.
Where do people use Operators?
Operators appear in every expression, from computing averages and discounts to testing x % 2 == 0 for evenness, masking bits in flags or combining conditions with and/or.
What is the most common mistake with Operators?
Confusing = (assignment) with == (comparison) is a classic slip.
What should I learn before this topic?
Start with Data Types, the topic just before it in Programming Fundamentals.
How can I practice it?
Answer the mini quiz in the interactive lesson, then take the Programming Fundamentals quiz.
Is Operators hard to learn?
It is a Beginner topic, so it works as an entry point. If the terms are new, read the explanation twice and try the visualizer before the quiz.
How long does it take to learn Operators?
Most learners can read the explanation and finish the interactive lesson in under an hour. Fluency comes from applying the idea, so plan a few short practice sessions with the quiz.
Which topics are related to Operators?
Data Types, Expressions, Variables are closely connected. The full list is in the related topics section of this page.
What should I study after Operators?
Continue with Expressions, the next topic in Programming Fundamentals.

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