Day 10

Syntax

You have already seen the following code a couple of times in the first chapters. Let's break it down to understand it better:

Example

#include <stdio.h>

int main() {

 printf("Hello World!");

  return 0;

} 

Example explained

Line 1: #include <stdio.h> is a header file library that lets us work with input and output functions, such as printf() (used in line 4). Header files add functionality to C programs.

Don't worry if you don't understand how  #include <stdio.h> works. Just think of it as something that (almost) always appears in your program.

Line 2: A blank line. C ignores white space. But we use it to make the code more readable.

Line 3: Another thing that always appear in a C program is main(). This is called a function. Any code inside its curly brackets {} will be executed.

Line 4: printf() is a function used to output/print text to the screen. In our example, it will output "Hello World!".