 How to write Comments in C Programming   What Is Comment In C Language?A comment is an explanation or description of the source code of the program. It helps a developer explain logic of the code and improves program readability. At run-time, a comment is ignored by the compiler. There are two types of comments in C: 1) A comment that starts with a slash asterisk /* and finishes with an asterisk slash */ and you can place it anywhere in your code, on the same line or several lines.2)    Single-line Comments which uses a double slash // dedicated to comment single lines







Example Single Line Comment// single line comment example

Here is an example of comments type // C program to demo 

// Single Line comment 

#include <stdio.h> 

int main(void) 

{ 

  

	// This is a single line comment 

	printf("Guru99"); 

	return 0;  // return zero

}

Example Multi Line Comment/* Sample Multiline Comment

Line 1

Line 2

….

…

*/

Example Multi Line Comment 

#include <stdio.h>

int main() {

/* in main function

I can write my principal code

And this in several comments line */

int x = 42; //x is a integer variable

printf("%d", x);

return 0;} Why do you need comments?A good programmer who writes codes understood by a human is better than a programmer who generates codes understood only by the machine. So, it is highly recommended to insert comments to your code because it is good programming practice. Comments do not affect a program because the compiler ignores them. Comments help the developer understand the logic/algorithm of the code if he revisits it after a long time.      