条件

if condition1 {
	// do something	
} else if condition2 {
	// do something else	
} else {
	// catch-all or default
}

分支

	switch num1 {
	case 98, 99:
		fmt.Println("It's equal to 98")
	case 100: 
		fmt.Println("It's equal to 100")
	default:
		fmt.Println("It's not equal to 98 or 100")
	}

自动 break,不想自动跳出,则使用 fallthrough

switch i {
	case 0: fallthrough
	case 1:
		f () // 当 i == 0 时函数也会被调用
}

支持条件:

switch {
	case i < 0:
		f1()
	case i == 0:
		f2()
	case i > 0:
		f3()
}

支持初始化:

switch a, b := x[i], y[j]; {
	case a < b: t = -1
	case a == b: t = 0
	case a > b: t = 1
}

for 循环

	for i := 0; i < 5; i++ {
		fmt.Printf("This is the %d iteration\n", i)
	}

死循环:

for { }

迭代:

for pos, char := range str {
...
}

跳转

支持 goto,别用。