c++ hello world

#include <iostream>

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

1. #include <iostream>: This line includes the iostream header file, which stands for Input/Output Stream. It provides functionality for reading from the standard input and writing to the standard output.

2. int main() {: This line declares the main function, which is the entry point of every C++ program. The program starts executing from here.

3. std::cout << "Hello, World!" << std::endl;: This line uses the cout (console output) object from the iostream library to display the text "Hello, World!" on the standard output (usually the console or terminal).

4. return 0;: This line indicates that the program has executed successfully. The 0 typically signifies a successful execution, while a non-zero value usually indicates an error or abnormal termination.