c++ hello word

To write a "Hello World" program in C++, follow these steps:

1. Start by including the necessary header file for input/output operations: cpp #include <iostream>

2. Declare the main function, which is the entry point of the program: cpp int main() {

3. Inside the main function, use the std::cout object from the iostream library to output the desired message: cpp std::cout << "Hello World!" << std::endl;

4. Close the main function using a closing brace: cpp return 0; }

5. Finally, compile and run the program to see the output.

Remember to save the file with a .cpp extension, such as hello.cpp. Then, compile the program using a C++ compiler, such as g++, and run the resulting executable.

This program will output "Hello World!" to the console when executed. It serves as a simple introduction to the C++ programming language.