Comments in C programming, single line and multiple line comments

We can write comments in our code for easy understanding and future maintenance of the script. Writing comments are good habit.
Statements written after // are treated as comments and ignored by C complier

int num ;  // This part is comment

In the above statement we have declared num as a integer variable and then written a comment after //

Multiline comments

IN the above code we have seen how to write comments in each line. What is written after // is treated as comment and not executed by compiler. The next line is treated as code again. To make a bulk of statements including more than one line we have to use /* (starting of comment ) and then */ ( ending of comment portion )

/*
These are comments 
This is part of comment and will be ignored by C compiler 

Comments...
*/

So once we use /* to start comment , then all statements written till end of comments marked by */ are ignored by compiler.
Nested comments are not allowed. So this line will generate error.

/*     comments /* some more */ again some more */

In the above line the portion after */ will not be taken as comments so it will create problem. Here are some examples of writing comments .

#include <stdio.h>:
int main(void){
float num; // declaring a float variable
/* We can assign value to our variable like this */
num=17.873;
	printf("num = %5.3f", num);
	/* this is a part of plus2net
	c tutorial basic section
	you can learn more advance features here
	*/
return 0;
}

Basics of C printf() C- Tutorials

Comments in C program

Multiline comments

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