Comparison Operators

Part of the Fundamentals section of Coddy's Rust journey — lesson 18 of 75.

Comparison operators are used to compare between two operands.

Sometimes we need to check whether an operand is bigger/smaller/... than another operand. The following table shows possible operators for comparison:

Operator	Meaning	Example
==	Equal	1 == 2 returns false
!=	Not Equal	1 != 2 returns true
>	Greater Than	1 > 2 returns false
<	Lower Than	1 < 2 returns true
>=	Greater or Equal	1 >= 2 returns false
<=	Lower or Equal	1 <= 2 returns true

The comparison operator returns true if the comparison is correct or false otherwise.

For example:

let var1: i32 = 13;
let var2: i32 = 12;
let var3: bool = var1 != var2;

var3 will hold true because var1 and var2 are not equal

Remember the boolean type, var3 is a boolean.

Challenge

Beginner

Write a script that initializes 2 variables n1 and n2 with the values 8 and 9 (accordingly).

After that initialize another variable n3 that will hold whether n1 is bigger than n2.

Try it yourself

fn main() {
    // Type your code below
    
    
    // Don\'t change the line below
    println!("n1 = {}, n2 = {}, n3 = {}", n1, n2, n3);
}

Test yourself

This lesson includes a short quiz. Start the lesson to answer it and track your progress.

All lessons in Fundamentals

1Introduction

Rust Hello World!Comments Basic Program Structure

4Operators Part 1

Arithmetic Operators Modulo Operator Arithmetic ShortcutsComparison OperatorsString Comparison

7Basic IO

Printing to Console Reading User Input Recap - Till 120 Recap - True or False

10Variable Bindings

Scope Shadowing Part 1 Variable Binding Shadowing Part 2

13Arrays Continued

Mutable Reference Arrays Array Methods Recap - Product Array Recap - Reversed Array Better Print

16Final Projects

Number Pattern Pattern Finder Student Grade Calculator

2Variables Part 1

Numbers Char String Boolean Mutable Variables

5Operators Part 2

Logical Operators Part 1 Logical Operators Part 2 Recap - Simple Logic Logical Operators Part 3

8Calculator App

Welcome Message Getting Numbers

Basic Operations

Formatted Output

11Functions

Declaring Functions Parameters and Arguments Return Values Multiple Return Values Recap - Sigma Function Recap - Validation Function

14Iterating Over Arrays

Range Guide Enhanced For Loop Borrow In Loop Common Array Operations

3Variables Part 2

Type Declaration Naming Conventions Type Inference Recap - Initialize Variables Type Casting

6Decision Making

If Expressions If-Else Match Statement Recap - If Else Nested If - Else

9Loops

For Over Series While Loop Break Continue Nested Loop Loop Labels Infinite Loop Recap - Dynamic Input

12Arrays Basics

Declaring Arrays Array as Parameter Accessing Elements Modifying Arrays Recap - Pretty Print Array

15String Operations

String Methods format! Macro String Conversion Recap - Format