package main

import "fmt"

func main() {
	// declare variables
	var a = 4

	// increment
	fmt.Printf("a = %d \n", a)
	a = a + 1
	fmt.Printf("a + 1 = %d \n", a)
	a++
	fmt.Printf("a++ = %d \n", a)

	// decrement
	a = a - 1
	fmt.Printf("a - 1 = %d \n", a)
	a--
	fmt.Printf("a-- = %d \n", a)
}
