Introduction

Let's see one simple example of C++ program and learn some basic syntax of it.

Syntax:

        

        
    #include <iostream>
    int main() {
        std::cout << "Hello World!";
        return 0;
    }
        
      

    Copy
  
      
    

Line 1:   #include <iostream>   is a statement to include the header file library. <iostream> is a library that lets us work with input and output functions, such as cout.

Line 2: blank space. C++ ignores white space, but we need white spaces to increase our code readability.

Line 3: the main() function. As its name implies, main() function consists of the main code to be executed. Any code inside the curly brackets { } is called “inside the main() function”

Line 4: std::cout is a function used to output or print text to the screen.

Line 5: return 0; ends the main() function.

Note: every C++ statement ends with a semicolon (;)

Also Look at Various Topic Below!