Question

How to use constants in Go

Answer 1

package main
 
import (
  "fmt"
  "math"
)

const s string = "golang"
 
func main() {
    fmt.Println(s)
	
	const x = 8392
	const v = 93478353 / x
    fmt.Println(v)
	
	fmt.Println(math.Cos(x))
}
 
 
 
/*
     
run:
 
golang
11138
-0.692373995461725
 
*/

 

70+ SQL courses for beginners and professionals

Answer 2

package main
 
import "fmt"
 
const Pi = 3.14159
 
func main() {
    const s = "go"
    fmt.Println(s)
     
    // s = "abc" // Error: cannot assign to s
     
    fmt.Println(Pi);
 
    const b = true
    fmt.Println(b)
     
    // const t := "temp" // syntax error: unexpected :=, expecting =
}
 
 
 
/*
run:
 
go
3.14159
true
 
*/

 

70+ SQL courses for beginners and professionals

Answer 3

package main
 
import "fmt"
 
const (
    a = 23875345
    b = -8
)
 
 
func main() {
    fmt.Println(a)
    fmt.Println(b)
}
 
 
 
/*
run:
 
23875345
-8
 
*/

 

70+ SQL courses for beginners and professionals