C Basic Syntax and Comments

C Basic System

In the previous tutorial, you learned to create your first program in C programming language, in the page, you will learn the basic syntax of C.

#include <stdio.h> and #include <stdlib.h> are statement written down to include stdio and stdlib header file that will allow you to get the user input from keyboard and display text on the screen.

C program will start from the main nethod;

int main(int argc, char *argv[]) 

{

// C statements

}

**Return 0; statement will tell the operating system that your program ends here without any error. a value that is not zero represents the abnormal program temination.

**printf is a commend used to prirnt text on the screen.

Comments

Like other language, in C programming language, comments are used to explain the code written or to exclude the part of code from being excuted. 

There are two types of comments C programming:

1.. To make comments for a single line, you will see the // sign. you can place only a single line of text after the single line comments sign. for the normal text, it should be the description of the code. if you place a line of code after single comments, the code won't be executed.

2.. To make comments for multiple lines, you will place the text or code in the /*...*/ block. 

See the example below:

#include <stdio.h>

#include <stdlib.h>

/* Your first program will print the words Hello World on the screen.*/

int main(int argc, char *argv[]) 

{

printf("Hello World\n")//print Hello world on the screen.

system("pause");

return 0;

}

The Result