Get the last character of a string in C++

A guide on how to retrieve the last character of a string in C++ using methods and syntax from the `string` library. This article helps you understand string manipulation and character access in C++.

In this article, we will learn how to obtain the last character of a string in C++ using the string library. You will learn how to manipulate strings and retrieve the desired character efficiently.

C++ code

#include <iostream>
#include <string>

int main() {
    std::string str = "Hello, world!";
    
    // Get the last character
    char lastChar = str.back();

    std::cout << "The last character of the string is: " << lastChar << std::endl;

    return 0;
}

Detailed explanation

• #include <iostream>: Library for basic input/output functions.
• #include <string>: Library providing string handling functions.
• std::string str = "Hello, world!";: Initializes a string str.
• char lastChar = str.back();: Uses the back() method of std::string to get the last character.
• std::cout << ...: Outputs the result to the console.

System Requirements:

• C++ version: C++11 or later
• Compiler: GCC, Clang, MSVC, or any compiler that supports C++11 or later

How to install:

No additional installation is needed as both iostream and string are part of the C++ standard library.

Tips:

• The back() method allows you to directly and efficiently access the last character. However, always check if the string is empty before calling back() to avoid errors.

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