STL vector::end()

标准模板库的容器最基本的三个函数 vector::begin(), vector::end(), vector::size()

iterator = vector::end() 返回的不是指向最后一个元素，而是指向最后的结束符。--iterator才是指向最后一个元素。

例：

// cliext_vector_end.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 two items 
    cliext::vector<wchar_t>::iterator it = c1.end(); 
    --it; 
    System::Console::WriteLine("*-- --end() = {0}", *--it); 
    System::Console::WriteLine("*--end() = {0}", *++it); 
 
// alter first two items and reinspect 
    *--it = L'x'; 
    *++it = L'y'; 
    for each (wchar_t elem in c1) 
        System::Console::Write(" {0}", elem); 
    System::Console::WriteLine(); 
    return (0); 
    } 
 

 a b c
*-- --end() = b
*--end() = c
 a x y