这样不对吗

using System;
using System.Collections.Generic;
using System.Text;

namespace Test
{
    class Program
    {
        static void Main(string[] args)
        {
            //声明整型数组，保存一组整数
            int[] num = new int[] { 3,34,43,2,11,19,30,55,20};
            bool hasSeven=false;//请完善代码，判断数组中有没有7的整倍数
            for(int i=0;i<mun.Length;i++)
            {
                if(num[i]%7==0)
                {
                    hasSeven=true;
                    break;
                }
            }
            if(hasSeven)
            console.writeline("有7的倍数");
            else
            console.wtiteline("没有7的倍数");
        }
    }
}