:= in golang
package main
import "fmt"
func main() {
// Declare and initialize a variable 'x' with the value 10
x := 10
// Declare a variable 'y' without initializing it
var y int
// Assign the value of 'x' to 'y'
y = x
// Print the values of 'x' and 'y'
fmt.Println("x:", x, "y:", y)
// Declare and initialize a new variable 'z' with the value 5
z := 5
// Perform an arithmetic operation and assign the result to 'z'
z += x
// Print the updated value of 'z'
fmt.Println("z:", z)
}