C++ int variable with different defining ways

We are explaining the use of int variables with different defining ways

// Creator: ibrahim (30.06.2024 00:00)    
/**
 * @file main.cpp
 * @brief Demonstrates the use of int with different defining ways in C++
 */

#include <iostream>

/**
 * @brief Main function of the program
 * 
 * Defines four integer variables in different ways and prints their values.
 * 
 * @return int Returns 0 upon successful execution
 */
int main() {
    int numberOne = 5; ///< 5 is a decimal number by default in C++
    int numberTwo = 1111111111; ///< 1111111111 is a decimal number by default in C++
    int numberThree = 1'111'111'111; ///< 1'111'111'111 is a decimal number by default in C++
    int numberFour = -1'111'111'111; ///< -1'111'111'111 is a decimal number by default in C++

    std::cout << "numberOne: " << numberOne << std::endl;
    std::cout << "numberTwo: " << numberTwo << std::endl;
    std::cout << "numberThree: " << numberThree << std::endl;
    std::cout << "numberFour: " << numberFour << std::endl;

    return 0;
}

The provided C++ code is a simple demonstration of how to define integer variables in different ways. It includes the use of single quotes as digit separators for readability, which is a feature available in C++14 and later versions.

The code begins by including the iostream library, which provides facilities for input/output operations.

#include <iostream>

In the main function, four integer variables are defined: numberOne, numberTwo, numberThree, and numberFour. Each of these variables is assigned a different integer value.

int numberOne = 5;
int numberTwo = 1111111111;

The third and fourth variables, numberThree and numberFour, are defined using digit separators (single quotes) for better readability. This does not change the value of the integer; it’s purely for making the code easier to read.

int numberThree = 1'111'111'111;
int numberFour = -1'111'111'111;

The code then uses std::cout to print the values of these variables to the console. Each variable is printed on a new line.

std::cout << "numberOne: " << numberOne << std::endl;

Finally, the main function returns 0, indicating successful execution of the program.