实例解析C++/CLI中的继承与枚举-5

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　　数组与继承

　　每个CLI数组类型隐式继承自抽象引用类型System::Array，另外，数组的某些成员也继承自这个基类，所以当使用一个CLI数组时，便可访问到数组及对象的每个公有成员，见例8，插3是对应的输出。数组的成员函数在此是直接调用的。

　　例8：

using namespace System;

generic
void Display1DArray(String^ text, array^ ary)
{
　if (ary == nullptr)
　{
　　Console::WriteLine("nullptr passed");
　　return;
　}
　Console::Write("{0} {1}:", text, ary->Length);
　for each (T element in ary)
　{
　　Console::Write(" {0}", element);
　}
　Console::WriteLine();
}
int main()
{
　array^ numbers = gcnew array{10, 75, 23, 18, 53, 18};
　Display1DArray("numbers, original", numbers);

　/*1*/ Console::WriteLine("IndexOf(18) {0}", Array::IndexOf(numbers, 18));

　/*2*/ Console::WriteLine("LastIndexOf(18) {0}",
　Array::LastIndexOf(numbers, 18));
　/*3*/ Array::Sort(numbers);
　Display1DArray("numbers, sorted ", numbers);

　/*4*/ Console::WriteLine("BinarySearch(23) {0}",
　Array::BinarySearch(numbers, 23));
　/*5*/ Array::Reverse(numbers);
　Display1DArray("numbers, reversed", numbers);

　array^ numbers2 = gcnew array(4);

　/*6*/ Array::Copy(numbers, numbers2, numbers2->Length);
　Display1DArray("numbers2 ", numbers2);
　
　/*7*/ Array::Clear(numbers, 1, 4);
　Display1DArray("numbers, cleared ", numbers);
}

　　插3：例8的输出

numbers, original 6: 10 75 23 18 53 18
IndexOf(18) 3
LastIndexOf(18) 5
numbers, sorted 6: 10 18 18 23 53 75
BinarySearch(23) 3
numbers, reversed 6: 75 53 23 18 18 10
numbers2 4: 75 53 23 18
numbers, cleared 6: 75 0 0 0 0 10