示例

在下面的示例中，方法 A() 以 double 值的形式返回变量 Area。

C#	复制代码
class ReturnTest { static double CalculateArea(int r) { double area = r * r * Math.PI; return area; } static void Main() { int radius = 5; double result = CalculateArea(radius); Console.WriteLine("The area is {0:0.00}", result); } } // Output: The area is 78.54

复制代码

class ReturnTest 
{
    static double CalculateArea(int r) 
    {
        double area = r * r * Math.PI;
        return area;
    }

    static void Main() 
    {
        int radius = 5;
        double result = CalculateArea(radius);
        Console.WriteLine("The area is {0:0.00}", result);
    }
}
// Output: The area is 78.54