作者：jicanmeng
时间：2017年06月21日
iterator的两个例子：
遍历vector：
#include <iostream>
#include <vector>
int main()
{
using namespace std;
vector<int> vect;
for (int nCount=0; nCount < 6; nCount++)
vect.push_back(10 - nCount); // insert at end of array
vector<int>::const_iterator it; // declare a read-only iterator
it = vect.begin(); // assign it to the start of the vector
while (it != vect.end()) { // while it hasn't reach the end
cout << *it << " "; // print the value of the element it points to
++it; // and iterate to the next element
}
cout << endl;
}
运行结果和上一篇文章的结果一样：
[jicanmeng@andy tmp]$ ./a.out
10 9 8 7 6 5
[jicanmeng@andy tmp]$遍历list：
#include <iostream>
#include <list>
int main()
{
using namespace std;
list<int> li;
for (int nCount = 0; nCount < 6; nCount++)
li.push_back(nCount);
list<int>::const_iterator it; // declare an iterator
it = li.begin(); // assign it to the start of the vector
while (it != li.end()) { // while it hasn't reach the end
cout << *it << " "; // print the value of the element it points to
++it; // and iterate to the next element
}
cout << endl;
}
以下是运行结果：
[jicanmeng@andy tmp]$ ./a.out
0 1 2 3 4 5
[jicanmeng@andy tmp]$