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How to print boolean value in Golang?

Last Updated : April 20, 2025

Printing boolean value in Golang

Given boolean values, we have to print them.

To print a boolean value using the fmt.Printf() function – we use "%t" format specifier.

Consider the below example –

In this example, we are declaring two variables value1 and value2, and assigning them with the boolean values true and false. And, then printing them using the "%t" format specifier. Also printing the boolean results of some boolean expressions.

Golang code to print boolean value

// Golang program to print boolean values

package main

import (
	"fmt"
)

func main() {
	value1 := true
	value2 := false

	fmt.Printf("value1 = %t\n", value1)
	fmt.Printf("value2 = %t\n", value2)

	// printing boolean values
	// on evaluating boolean expressions
	fmt.Printf("10 == 20 : %t\n", 10 == 20)
	fmt.Printf("10 != 20 : %t\n", 10 != 20)
	fmt.Printf("10 < 20 : %t\n", 10 < 20)
	fmt.Printf("10 > 20 : %t\n", 10 > 20)
}

Output:

value1 = true
value2 = false
10 == 20 : false
10 != 20 : true
10 < 20 : true
10 > 20 : false

Additional Approaches

1. Using if-else statements

We can also use if-else statements to print boolean values based on conditions.

Example – In the following code, we evaluate a condition and print the result using an if-else statement.

// Golang program to print boolean using if-else statement

package main

import (
	"fmt"
)

func main() {
	value := true

	// using if-else statement
	if value {
		fmt.Println("Value is true")
	} else {
		fmt.Println("Value is false")
	}
}

2. Using boolean expressions directly

You can also print boolean values directly by passing expressions into fmt.Printf(). This allows us to print results without assigning values to variables.

Example – In this case, we print the results of several comparisons directly.

// Golang program to print boolean using expressions directly

package main

import (
	"fmt"
)

func main() {
	// printing boolean directly from expressions
	fmt.Printf("5 == 5 : %t\n", 5 == 5)
	fmt.Printf("5 != 10 : %t\n", 5 != 10)
	fmt.Printf("20 < 15 : %t\n", 20 < 15)
}

3. Storing boolean values in variables

Another approach is to store boolean values in variables and then print them. This gives more flexibility when handling boolean data.

Example – In this example, we store boolean results in variables and then print them.

// Golang program to store boolean values in variables

package main

import (
	"fmt"
)

func main() {
	var result1 bool = true
	var result2 bool = false

	// printing boolean values from variables
	fmt.Println("result1 = ", result1)
	fmt.Println("result2 = ", result2)
}

Go: Print Boolean Value Exercise

Select the correct option to complete each statement about printing boolean values in Go.

1. In Go, a boolean value can be printed using the ___ function. --Select-- fmt.Print fmt.Println fmt.Printf
2. In Go, a boolean value is printed as ___ for true and ___ for false. --Select-- true, false yes, no 1, 0
3. To format the output when printing a boolean value, you can use the ___ function. --Select-- fmt.Printf fmt.Println fmt.Print

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