1. #include : This line includes the necessary header file for input and output operations (iostream). This file is essential for using the std::cout object.

  2. int main(): This is the main function where the program starts its execution. The int before main indicates that the function returns an integer value.

  3. std::cout << "Hello, World!" << std::endl;: This line uses the std::cout object to output the string "Hello, World!" to the console. << is the stream insertion operator, and std::endl is used to insert a newline character and flush the output buffer.

  4. return 0;: This line indicates that the program has executed successfully. The 0 is returned to the operating system, typically indicating that the program terminated without errors.

To compile and run this program:

  1. Save the code in a file with a .cpp extension (e.g., hello.cpp).
  2. Open a terminal or command prompt.
  3. Navigate to the directory containing your C++ file using the cd command.
  4. Compile the program using a C++ compiler (e.g., g++): g++ hello.cpp -o hello
  5. Run the compiled program: ./hello (or hello.exe on Windows)

You should see the output "Hello, World!" displayed on the console.


Code Examples

#1 Code Example- C++ "Hello World!" Programing

Code - C++ Programming

#include <iostream>

int main() {
    std::cout << "Hello World!";
    return 0;
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Hello World!


Hello World Programing Example in C++ with Code Explanation-DevsEnv