package main

import (
	"fmt"
	"sync"
)

var num int64 = 0
var max = 10000
var WG sync.WaitGroup

func main() {
	WG.Add(2)
	go addNum(1)
	go addNum(2)
	WG.Wait()
	fmt.Printf("num=%d \n", num)
}
func addNum(no int) {
	for i := 0; i < max; i++ {
		num++
	}
	fmt.Printf("第%d个go,num1=%d \n", no,num)
	WG.Done()
}