stl iterator

In this example, we are declaring a character list and pushing the characters from 'A' to 'Z' using a for loop and push_back() function and then accessing the elements using const_iterator.

在此示例中，我們聲明一個字符列表，并使用for循環和push_back()函數 將字符從'A' 推 送到'Z' ，然后使用const_iterator訪問元素 。

Code:

碼：

#include <iostream>
#include <list> //for list
using namespace std;
int main()
{
// list of character elements
list<char> clist;
// append characters from 'A' to 'Z'
for (char i = 'A'; i <= 'Z'; ++i) {
clist.push_back(i);
}
//declaring a const_iterator
list<char>::const_iterator it;
// printing all elements
cout << "list (clist) elements: " << endl;
for (it = clist.begin(); it != clist.end(); ++it) {
cout << *it << ' ';
}
cout << endl;
return 0;
}

Output

輸出量

list (clist) elements:
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

翻譯自: https://www.includehelp.com/stl/access-elements-of-a-characters-list-using-const_iterator-in-cpp-stl.aspx

stl iterator