使用数字运算符处理变量

程序下l好几天都还没有下好 渣渣校园网

program.cs

static void Main(string[] args)
{
double firstNumber, secondNumaber ;
string userName;
Console.WriteLine("Enter you name:");
userName = Console.ReadLine();
Console.WriteLine("Weclome {0}!", userName);
Console.WriteLine("Now gine me a number");
firstNumber = Convert.ToDouble(Console.ReadLine());
Console.WriteLine("Now give me another number:");
secondNumber =Console.ToDouble(Console.ReadLine());
Console.WriteLine("The sum of {0} and {1} is {2}.", firstNumber,secondNumber,firstNumber+secondNumber );
Console.WriteLine("The resultof subtracting {0} from {1} is {2}.", firstNumber,secondNumber,firstNumber-secondNumber );
Console.WriteLine("The product of {0} and {1} is {2}.", firstNumber,secondNumber,firstNumber*secondNumber );
Console.WriteLine("The result of dividing {0} by {1} is {2}.", firstNumber,secondNumber,firstNumber/secondNumber );
Console.WriteLine("The remainder after dividing of {0} by {1} is {2}.", firstNumber,secondNumber,
firstNumber%secondNumber );
Console.Readkey();
}