How to define string variables in c++

The string data type is used to define string variables in C, such as string name; initialized through assignment operators, such as name = "John Doe"; and obtaining values ​​using << operators, such as cout << ; name; String attributes: length() returns the length, empty() checks if it is empty, compare() compares with another string.

Definition of string variables in C

Definition of string variables

In C, string variables are used to store and manipulate text. To define a string variable, we use the string data type, followed by the variable name:

<code class="cpp">string variableName;</code>

For example:

<code class="cpp">string name;</code>

Initialize the string variable

In After defining the string variable, we can initialize it through the assignment operator (=):

<code class="cpp">name = "John Doe";</code>

At this time, the variable name stores the text "John Doe".

Get the value of a string variable

To get the value of a string variable, we can use the << operator:

<code class="cpp">cout << name;</code>

This The value of variable name will be printed in the console.

Properties of string variables

String variables have the following properties:

• length():Return The length of the string (number of characters).
• empty(): Returns true if the string is empty, otherwise returns false.
• compare(): Compare a string with another string.

Example

The following is an example of using a string variable:

#include 
#include 

using namespace std;

int main() {
  string name;

  cout << "Enter your name: ";
  getline(cin, name);

  cout << "Your name is " << name << endl;

  return 0;
}

In this example, we define a string type variable name, then reads a string from the user input and stores it in name. Finally, we use the cout statement to print the value of the variable name. 
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