int firstNumber, secondNumber, thirdNumber, fourthNumber;
            Console.WriteLine("Enter your four numbers in turn:");
            firstNumber = Convert.ToInt32(Console.ReadLine());
            secondNumber = Convert.ToInt32(Console.ReadLine());
            thirdNumber = Convert.ToInt32(Console.ReadLine());
            fourthNumber = Convert.ToInt32(Console.ReadLine());
            Console.WriteLine("The product of dividing {0} * {1} * {2} * {3} is: {4}",firstNumber,secondNumber,thirdNumber,fourthNumber,firstNumber*secondNumber*thirdNumber*fourthNumber);
        错误 3 无法将类型“double”隐式转换为“int”。存在一个显式转换(是否缺少强制转换?) D:\liz\csharp\character3\VariableAndExpress\VariableAndExpress\Program.cs 52 28 VariableAndExpress