求c#的程序运算结果～

求c#的程序运算结果～
using system
public class enumtext
{
enum sports
{football,basketball,running=4,swimming,golf};
public static void main()
{
sports x=(sports)0;
sports y=(sports)4;
sports z=(sports)7;
console.writeline(x={0},x);
console.writeline(y={0},y);
console.writeline(z={0},z);
}}

输出顺序是：x = football y = running z = 7
enum:枚举,若没有规定成员值,其成员的值是从0开始的.上述中football = 0,basketball = 1；
在中间规定的成员值,running=4.不会影响此成员前面的成员值,只会让此成员之后的成员的值发生变化.上述中：swimming = 5,golf = 6.