vector cbegin_vector :: cbegin()函数以及C ++ STL中的示例
vector cbegin
C ++ vector :: cbegin()函数 (C++ vector::cbegin() function)
vector::cbegin() is a library function of "vector" header, it is used to get the const iterator pointing to the first element of the vector.
vector :: cbegin()是“ vector”头文件的库函数,用于获取指向向量第一个元素的const迭代器。
It returns a const_iterator which is an iterator point to the constant content(vector), the const_itertator can be increased or decreased just like an iterator but it cannot be used to update/modify the vector content it points to.
它返回一个const_iterator ,它是指向常量content(vector)的迭代器, const_itertator可以像迭代器一样增加或减少,但不能用于更新/修改其指向的向量内容。
Note: To use vector, include <vector> header.
注意:要使用向量,请包含<vector>标头。
Syntax of vector::cbegin() function
vector :: cbegin()函数的语法
vector::cbegin();
Parameter(s): none – It accepts nothing.
参数: 无 –不接受任何内容。
Return value: const_iterator – It returns a constant iterator pointing to the first element of the vector.
返回值: const_iterator –它返回一个常量迭代器,指向向量的第一个元素。
Example:
例:
Input:
vector<int> vector1{ 1, 2, 3, 4, 5 };
Function call:
vector<int>::const_iterator cit;
cit = vector1.cbegin();
cout<
C++ program to demonstrate example of vector::cbegin() function
Output
first element is: 10
Reference: C++ vector::cbegin()
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翻译自: https://www.includehelp.com/stl/vector-cbegin-function-with-example.aspx
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