额外的如果C#中的语句或重复代码

for (int i = 0; i < 10; i++)
{
    Console.WriteLine("Hello World!");
}

int num = 0;
while (num != 10)
{
    Console.WriteLine("Please enter a number:");
    num = int.Parse(Console.ReadLine());
}

int num1 = 5;
int num2 = 10;
if (num1 > num2)
{
    Console.WriteLine("num1 is greater than num2");
}
else if (num1 < num2)
{
    Console.WriteLine("num1 is less than num2");
}
else
{
    Console.WriteLine("num1 is equal to num2");
}