写出输出结果并解释导致该结果的原因。 class CX { public int x; } struct SX { public int x; } class App { public static void ctest(CX c) { c.x=8; } public static void stest(SX s) { s.x=8; } public static void Main() { CX cc= new CX(); SX ss= new SX(); cc.x=1; ss.x=1; ctest(cc); stest(ss); Console.WriteLine("cc.x={0},ss.x={1}",cc.x,ss.x); } }