What is the difference between push method and push_back method in C++

The purpose of this article is to share with you the difference between push method and push_back method in C++. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

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Introduction of push_back method

Vector::void push_back (const value_type& val)

Vector::void push_back (value_type&& val)

This function adds a new element to the end of the vector, the position is the next element of the current last element, and the value of the new element is a copy (or mobile copy) of the val.

Introduction to common methods of vector

(1) vector

< 类型 >

Identifier

(2) vector

< 类型 >

Identifier (maximum capacity); (3) vector

< 类型 >

Identifiers (maximum capacity, initial all values); (4) int I [4] = {12pr 3pm 4Gen 5}; vector

< 类型 >

Vi (I, iTun2); / / get the value after the I index is 3; (5) vector

< vector >

/ / vi defines a two-dimensional container; remember that there must be spaces, otherwise an error may be reported

Vector

< int >

When using line / /, be sure to initialize vi lines first; for (int I = 0; I)

< 10 ; i ++) { vector.push_back(line); } vector 定义二维数组，长度可以不预先确定。(6)C++ vector排序 vector< int >

Vi; vi.push_back (1); vi.push_back (3); vi.push_back (0); sort (vi.begin (), vi.end ()); / / from small to large reverse (vi.begin (), vi.end ()); / / from big to small

(7) sequential access

Vector

< int >

Vi; for (int I = 0; I < 10; I + +) {vi.push_back (I);} for (int I = 0; I < 10; I + +) / / the first calling method {cout