C#中的return关键字
return语句用于返回值。当程序调用函数时,程序控制权转移到被调用函数。
下面以一个例子来了解C#中return语句的用法。在这里,我们找到平均值并使用return语句返回结果。
double getAverage(int[] arr, int size) { int i; double avg; int sum = 0; for (i = 0; i < size; ++i) { sum += arr[i]; } avg = (double)sum / size; return avg; }
这是完整的例子-
示例
using System; namespace ArrayApplication { class MyArray { double getAverage(int[] arr, int size) { int i; double avg; int sum = 0; for (i = 0; i < size; ++i) { sum += arr[i]; } avg = (double)sum / size; return avg; } static void Main(string[] args) { MyArray app = new MyArray(); /* an int array with 5 elements */ int [] balance = new int[]{1000, 2, 3, 17, 50}; double avg; /* pass pointer to the array as an argument */ avg = app.getAverage(balance, 5 ) ; /* output the returned value */ Console.WriteLine( "Average value is: {0} ", avg ); Console.ReadKey(); } } }