深入Ref,Out的理解及其使用

    class program 
       { 
           //使用out后必须对变量赋值 
           public void testout(out int x, out int y) 
           { 
               x = 1; 
               y = 2; 
           } 
           //此时传进来的值分别为x1:10,y1:11,输出之后的x1的值为2 

           public void testref(ref int x, ref int y) 
           { 
               //引用剪剪那句话传进来的是猪,出来的可能是头牛(很精辟！) 
               x = 2; 

           } 
           static void main(string[] args) 
           { 
               int x; 
               int y; 
               program p1 = new program(); 
               p1.testout(out x,out y); 
               console.writeline("x={0},y={1}", x, y); 
               //在使用之前ref必须对变量赋值 
               int x1 = 10; 
               int y1 = 11; 
               p1.testref(ref x1,ref y1); 
               console.writeline("x1={0},y1={1}", x1, y1); 
           } 
       }