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using System; namespace CalculatorApplication { class NumberManipulator { public void swap(ref int x, ref int y) { int temp; temp = x; /* 保存 x 的值 */ x = y; /* 把 y 赋值给 x */ y = temp; /* 把 temp 赋值给 y */ } static void Main(string[] args) { NumberManipulator n = new NumberManipulator(); /* 局部变量定义 */ int a = 100; int b = 200; Console.WriteLine("在交换之前,a 的值: {0}", a); Console.WriteLine("在交换之前,b 的值: {0}", b); /* 调用函数来交换值 */ n.swap(ref a, ref b); Console.WriteLine("在交换之后,a 的值: {0}", a); Console.WriteLine("在交换之后,b 的值: {0}", b); Console.ReadLine(); } } }
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