Hello World program

  • November 5, 2022
  • C++
Accessing Elements

Program code:


using namespace std;

int main()
    cout << "Hello World! \n Coderzpy.com!!\n\n";
    return 0;
Hello World! 
  • #include<iostream>: A number sign (#) at the start of a line instructs the compiler’s pre-processor. The <iostream> header defines the libraries required to accept and output data.
  •  using namespace std: This instructs the compiler to use the standard (std) namespace, which includes C++ Standard Library features.
  • int main(): C++, like any other programming language, begins program execution with the main function: int main ()
  • cout Statement: cout is used to print output to the screen. (This is similar to the printf statement in C.) The command cin >> is used to accept input from the terminal. (This is analogous to the scanf statement in C.)
  •  return 0: The return type of the main method is int. As a result, in order to terminate the program, we must return 0.

Note: also read about Namespaces in C++

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