vector::front (STL/CLR)

發行項
06/07/2013

存取第一個項目。

    reference front();

備註

成員函式會傳回受控制序列必須為非空白的第一個元素的參照。您可以用它來讀取或寫入第一個項目，當您知道它的存在。

範例

// cliext_vector_front.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 first item 
    System::Console::WriteLine("front() = {0}", c1.front()); 
 
// alter first item and reinspect 
    c1.front() = L'x'; 
    for each (wchar_t elem in c1) 
        System::Console::Write(" {0}", elem); 
    System::Console::WriteLine(); 
    return (0); 
    }