Computer Programming – Basic Operators

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· November 29, 2025 · 3 min read · Updated November 29, 2025

📌 Key Takeaways

Computer Programming – Basic Operators
Basic Operators
What Are Operators?
Types of Operators
When Do You Use Operators?

Table of Contents:

Basic Operators

In every programming language, operators are the symbols used to perform operations on values and variables. Think of operators as tools that help your program calculate results, compare values, or make decisions. Just like arithmetic in real life uses +, –, ×, and ÷, programming languages provide their own sets of operators.

Different languages (C, Java, Python) may have slight variations, but the fundamental concepts remain the same. This chapter introduces the most common operator categories you will use in your programs.

What Are Operators?

Operators tell the computer what action to perform. They work on values called operands.
Example:

10 + 20

Here:

10 and 20 → operands
+ → operator

Types of Operators

Most programming languages support the following categories of operators:

Arithmetic Operators

These operators perform basic mathematical operations.

Operator	Meaning	Example
+	Addition	a + b
–	Subtraction	a – b
*	Multiplication	a * b
/	Division	a / b
%	Modulus	a % b (remainder)

Assignment Operators

Assignment operators are used to assign values to variables.

Operator	Meaning	Example
=	Assign value	x = 10
+=	Add and assign	x += 5 (x = x + 5)
-=	Subtract and assign	x -= 3
*=	Multiply and assign	x *= 2
/=	Divide and assign	x /= 2

Relational (Comparison) Operators

These operators compare two values and return true or false.

Operator	Meaning	Example
==	Equal to	a == b
!=	Not equal to	a != b
>	Greater than	a > b
<	Less than	a < b
>=	Greater or equal	a >= b
<=	Less or equal	a <= b

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Logical Operators

Logical operators help combine conditions.

Operator	Meaning	Example
&& (and) / and	True if both conditions are true	a > 5 && b < 10
\|\| (or) / or	True if at least one condition is true	a == 10 \|\| b == 20
! (not)	Reverses condition	!false → true

Unary Operators

These operate on a single operand.

Operator	Meaning	Example
++	Increment	x++
—	Decrement	x–
–	Unary minus	-x

Example in C

#include <stdio.h>

int main() {
    int a = 10, b = 20;
    int result = a + b;

    printf("Result = %d", result);
    return 0;
}

Example in Java

class Main {
    public static void main(String[] args) {
        int a = 10, b = 20;
        int result = a + b;

        System.out.println("Result = " + result);
    }
}

Example in Python

a = 10
b = 20
result = a + b

print("Result =", result)

When Do You Use Operators?

You will use operators when you need to:

Perform calculations
Compare values
Make decisions using conditions
Work with loops
Update variable values

Operators are used in almost every line of code you write.

FAQ

What are basic operators in programming?

Basic operators are symbols used to perform operations such as addition, comparison, or logical evaluation in a program.

Are operators the same in all programming languages?

Most languages share similar operator concepts, but syntax differences may exist.

What is the difference between `=` and `==`?

= assigns a value, while == compares two values.

What does the modulus operator (%) do?

It returns the remainder of a division operation.

Why are operators important in programming?

They allow programs to perform calculations, make decisions, and control the flow of execution.

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