std::quoted in C++ 14

When it comes to C++ programming dealing with strings that have spaces, special characters, and formatting can be quite a hurdle. Luckily there is the std::quoted function that comes to the rescue. It provides a way to handle and manipulate the input and output of strings while preserving their formatting. In this article, we will explore the concept of std::quoted. See how it can be effectively utilized.

In versions of C++14 and, beyond the std::quoted function offers a solution, for the challenge mentioned earlier. It allows you to safely handle strings that contain spaces and special characters while keeping their formatting intact. This function is defined in the <iomanip> header. It becomes particularly handy when used alongside the std::getline function.

Syntax

The syntax for using std::quoted is as follows:

std::quoted(str)

where,

• str is the string input.

Examples of std::quoted

The following examples will help us understand the use of std::quoted in C++ programs.

Example 1:

1. The code starts by including the header files using the #include directives.
2. We define a variable called “input” of type std::string and initialize it with the formatted content “Hello, World!”.
3. Next, we use std::cout to display the content demonstrating how it looks before applying std::quoted.
4. To encapsulate the content, within quotes and protect any characters or spaces we utilize the std::quoted function and output its quoted version.

C++14

// C++ Program to illustrate std::quote in C++14
#include <iostream>
#include <iomanip>
#include <string>

int main() {
    // Define a string variable with formatted content
    std::string input = "Hello, Geeks!";

    // Display the original content
    std::cout << "Original content: " << input << std::endl;

    // Output the quoted content using std::quoted
    std::cout << "Quoted content: " << std::quoted(input) << std::endl;

    return 0;
}

Output

Original content: Hello, Geeks!
Quoted content: "Hello, Geeks!"

Example 2:

1. Now let’s declare a variable named “Input” of type std::string to store the user’s input.
2. In this example, we simulate user input by assigning a string with formatting elements to Input.
3. To showcase the original input, with its intended formatting we display it as is.
4. Finally using std::quoted again we output the quoted version of the user input. This ensures that any spaces or special characters are accurately preserved and displayed.

C++14

// C++ Program to illustrate std::quote in C++14
#include <iostream>
#include <iomanip>
#include <string>

int main() {
    std::string Input;
    // Simulate user input
    Input = "Hello, Geek! Have you solved any coding problem today?";

    // Display original user input
    std::cout << "Original Input: " << Input << std::endl;

    // Output quoted user input
    std::cout << "Quoted Input: " << std::quoted(Input) << std::endl;

    return 0;
}

Output

Original Input: Hello, Geek! Have you solved any coding problem today?
Quoted Input: "Hello, Geek! Have you solved any coding problem today?"