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Comments in C program

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 */ is 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;
}

C programming Basics
printf : Sending output to screen scanf : Reading data from user or keyboard as input to C program comments : Using comments inside C program for loop in C program if else condition in C program switch statment to execute part of the program in C program getchar function to read data from keyboard putchar function to display single data

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Basic of C

printf scanf comments for loop if else switch getchar() putchar()

C Sections

Basics of C

Comments in C program

int num ; // This part is comment

Multiline comments

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

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

#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; }

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

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

#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;
}