Variable with zero value

Variables with Zero Values#

In Go, variables declared without an explicit initial value are given their zero value. The zero value depends on the type of the variable.

package main
 
import string">"fmt"
 
func main() {
	var a int
	var b string
	var c float64
	var d bool
 
	fmt.Printf(string">"%v \n", a)
	fmt.Printf(string">"%v \n", b)
	fmt.Printf(string">"%v \n", c)
	fmt.Printf(string">"%v \n", d)
 
	fmt.Println()
}
 

Run in Go Playground →

Output:#

In the program above, we declared variables with their types but didn't assign any values. Go automatically assigns zero values:

• For integers (int): 0
• For strings (string): empty string
• For floating-point numbers (float64): 0.0
• For booleans (bool): false