Home > Backend Development > C++ > How to assign a value to a string in c++

How to assign a value to a string in c++

下次还敢
Release: 2024-05-06 17:15:22
Original
971 people have browsed it

There are the following methods for assigning values ​​to strings in C: 1. Direct initialization; 2. Assignment operator; 3. Copy constructor; 4. Literals; 5. Assignment from character array; 6. Assignment from stringstream .

How to assign a value to a string in c++

Assigning value to string in C

String is a basic data type widely used in C , used to store and manipulate text data. In C, there are several common methods for assigning values ​​to strings:

1. Direct initialization

The simplest method is to use direct initialization syntax:

<code class="cpp">std::string my_string = "Hello world!";</code>
Copy after login

2. Assignment operator

You can use the assignment operator= to assign a string to another string:

<code class="cpp">std::string new_string;
new_string = "Hello there!";</code>
Copy after login

3. Copy constructor

The copy constructor creates a new string whose content is the same as the original string:

<code class="cpp">std::string original_string = "Original";
std::string copied_string(original_string);</code>
Copy after login

4. Literal

Literals are a simplified syntax that can directly assign values ​​to strings:

<code class="cpp">auto literal_string = "This is a literal string.";</code>
Copy after login

5. Assign values ​​from character arrays

Data can be assigned to a string from a character array:

<code class="cpp">char c_array[] = "C-style string";
std::string from_array(c_array);</code>
Copy after login

6. Assignment from stringstream

Data can be extracted from a stringstream and assigned to a string:

<code class="cpp">std::stringstream ss;
ss << "Data from stringstream";
std::string from_stream;
ss >> from_stream;</code>
Copy after login

According to different situations, choosing the most appropriate assignment method can improve the readability and efficiency of the code.

The above is the detailed content of How to assign a value to a string in c++. For more information, please follow other related articles on the PHP Chinese website!

Related labels:
c++
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Latest Articles by Author
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template