Skip to main content

Comments in C

 Comment is the code which is not executable means compiler will not compile the comments and that’s why comments are not visible on output screen.


Two types of Commenting:

Type 1: double slash ‘//’ method the whole statement after double slash is not executed by compiler
Example: try to run below code its output will be blank screen

#include <stdio.h>
void main(){
// printf (“Hello World!”);
}
#include<stdio.h>
void main ( ){ //Comments
// Comment
printf (“Hello World!”);//abc
}
#include<stdio.h>
//Comments
void main(){
//Comments
printf(“Hello World”);
}
o/p: blank screen
O/p: Hello World!
O/p: Hello World

In this way you can give multiple comments anywhere in the program but double slash is used to 
comment only single line for commenting multiple lines use type 2. 

Type 2: For multiline commenting or for commenting a whole paragraph from the program we have 
to add /* at the start of comment and */ at the end of comment as shown in examples:

#include <stdio.h>
void main(){
/*
printf (“Hello World!”);
printf (“Hello World!”);
*/
}
#include<stdio.h>
void main ( ){ //Comments
/* Comment*/
printf (“Hello World!”);//abc
}
#include<stdio.h>
/*
Comments*/
void main(){
//Comments
printf(“Hello World”);
}
o/p: blank screen
O/p: Hello World!
O/p: Hello World

In above example at a time // and /**/ comments you can use in code.

Uses of Comments: Comments are optional in program but it is very helpful to write our own notes 
inside the program just for our convenience.










Comments

  1. Air Jordan 6'9 Double-Edge Razor - Jordan6Retro
    Compare prices and authentic air jordan 13 shoes Online find an amazing price 룰렛 for the Air Jordan 6'9 kadangpintar Double-Edge Razor. (United States) at a low price. titanium metal trim Compare the top-rated brands Air Jordan 6 Retro

    ReplyDelete

Post a Comment

Popular posts from this blog

Why should I learn Computer language (Programming)? And why C language good for beginners?

1. Software is the spirit  ( आत्मा )  of hardware . 2. Just by joining some hardware (Electronics  Components) we can’t make our  Computers, Laptops, Mobiles, Tablets, etc. so programming is essential to make this hardware functional. 3. Program instructs and controls the hardware and C is the very basic language to start. 1. By learning a computer language you'll able to build your own software, OS, Virus, Antivirus. For example, WhatsApp, Hike, Calculator,  Media  Player, Facebook, Twitter. 5. After learning the C language you'll be able to build your own computer applications. 6. C language Helps to learn more advanced languages like Java, Dot Net, MATLAB. because this all language depends upon C language. 7. It is good for starters because it is just like the English language and easy to understand.

Format Specifying in C

  Data Types Format Specify Char %c  or %s Int %d or %i Float %f Using of Variable # include <stdio.h> void main() { int a = 5, b = 7; int c = a+b+3; printf (“C= %d”, c); } # include <stdio.h> void main() { int a = 5, b = 7; printf (“SUM= %d”, a+b); } # include <stdio.h> void main() { char a1 = ‘s’, a2 = ‘g’; printf (“%s%c%s%s”,a1,a2,a2,a1); } O/p: C = 15 O/p: C = 15 O/p: sggs

New trends and advantages of C language.

1. You can program the ROBOTS and  Automatic Running Machines  using C language. click here for more information.  2. For building more advanced  software or  Games you need to  learn more advanced languages like  Visual  Basic,  .NET, JAVA, ANDROID programming which is based on C.  3. To build a website you need only HTML and you can make your own website but for making it more advance you need to learn more web designing languages like CSS, JavaScript, Ajax, PHP and this all languages are very easy to learn if you have some basic knowledge about C. 4. After learning C you will be able to make your own software like Calculator, Games, Embedded Softwares, Compilers.