Introduction

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

    

      

      
  #include <stdio.h>
  
  int main() {
      printf("Hello World!");
      return 0;
  }
      
    

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

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: printf() 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 (;)

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