使用rand生成随机数

package main

import(

"fmt"

"math/rand"

)

func main(){

for i:=0;i<=10;i++{

    t:=rand.Int()

    fmt.Printf("Int num is %v\n",t)

}

for i:=0;i<=10;i++{

    t:=rand.Intn(30)

    fmt.Printf("Int max=20 num is:%v\n ",t)

}

   for i:=0;i<=10;i++{

    t:=rand.Float32()

    fmt.Printf("Float num is %v\n",t)

    

}

}