Relational operators in Go - Step-by-Step Execution

Concept Flow - Relational operators

Start

↓

Evaluate Left Operand

↓

Evaluate Right Operand

↓

Apply Relational Operator

↓

Result: true or false

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Use Result in Condition or Output

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End

Relational operators compare two values and return true or false, which can be used in conditions or printed.

Execution Sample

Go

package main
import "fmt"
func main() {
  a, b := 5, 3
  fmt.Println(a > b)
}

This code compares if a is greater than b and prints the result.

Execution Table

Step	Expression	Evaluation	Result	Output
1	a = 5	Assign 5 to a	5
2	b = 3	Assign 3 to b	3
3	a > b	5 > 3	true
4	fmt.Println(a > b)	Print true		true

💡 Program ends after printing the relational operator result.

Variable Tracker

Variable	Start	After Step 1	After Step 2	Final
a	undefined	5	5	5
b	undefined	undefined	3	3

Key Moments - 2 Insights

Why does the expression 'a > b' return true or false instead of a number?

Relational operators compare values and always return a boolean (true or false), not a number. See execution_table row 3 where '5 > 3' evaluates to 'true'.

What happens if both operands are equal in a relational operator like 'a == b'?

If both operands are equal, the '==' operator returns true. This is shown by the relational operator always returning a boolean based on the comparison.

Visual Quiz - 3 Questions

Look at the execution table, what is the result of 'a > b' at step 3?

A false

B true

C 5

D 3

💡 Hint

Check the 'Result' column in execution_table row 3.

At which step is the value 3 assigned to variable b?

A Step 2

B Step 3

C Step 1

D Step 4

💡 Hint

Look at the 'Expression' and 'Evaluation' columns in execution_table row 2.

If we change 'a' to 2, what would be the result of 'a > b' at step 3?

A 2

B true

C false

D 3

💡 Hint

Compare values in variable_tracker and recall that 2 > 3 is false.

Concept Snapshot

Relational operators compare two values and return true or false.
Common operators: ==, !=, >, <, >=, <=.
Used in conditions and expressions.
Example: a > b returns true if a is greater than b.
Always returns a boolean value.

Full Transcript

This example shows how relational operators work in Go. Variables a and b are assigned values 5 and 3. The expression 'a > b' compares these values and returns true because 5 is greater than 3. The result is printed. Relational operators always return true or false, not numbers. This is useful for making decisions in code.