vector::back (STL/CLR)

项目
06/09/2015

访问最后一个元素。

    reference back();

备注

成员函数返回控制到序列中最后面的元素的引用，必须非空。使用它访问，最后一个元素，在您知道存在)。

示例

// cliext_vector_back.cpp 
// compile with: /clr 
#include <cliext/vector> 
 
int main() 
    { 
    cliext::vector<wchar_t> c1; 
    c1.push_back(L'a'); 
    c1.push_back(L'b'); 
    c1.push_back(L'c'); 
 
// display initial contents " a b c" 
    for each (wchar_t elem in c1) 
        System::Console::Write(" {0}", elem); 
    System::Console::WriteLine(); 
 
// inspect last item 
    System::Console::WriteLine("back() = {0}", c1.back()); 
 
// alter last item and reinspect 
    c1.back() = L'x'; 
    for each (wchar_t elem in c1) 
        System::Console::Write(" {0}", elem); 
    System::Console::WriteLine(); 
    return (0); 
    }