See a problem in else if statement

Dangling else problem

-
Image
Hello, This problem comes when we use else if statement and do some mistake more describe is given below......... Dangling else problem: One of the major problem with nested if is dangling else problem. The problem arises when both outer if statement inner if statement might pair with common else statement. Thus the compiler is not able to judge to pair the else with which statement. The solution to this problem is given by the compiler that it pairs else with the recent if thus sometimes giving wrong result.                                           Hence the programmer should put early bracket wherever required. This post is may very short because my only aim was to describe this problem. Thank you, Keep supporting............. 
1 comment

Pointing Devices

-



Pointing devices:

Pointing input device in able the user to easily control the movement of the pointer to select item on a display screen to select command from commands menu to draw graphics some examples of pointing devices include mouse trackball, light pen, joystick and touchpad.

Mouse:
The mouse is an input device that was invented by Douglas engelbart in 1963. It is the key input device used in a graphical user interface which can be used to handle the pointer easily on the screen to perform various functions such as opening a program or file. With the mouse the users no longer need to memories commands, which was easily a necessity when working with text based online environment like MS-DOS.
Some advantages of mouse is dead mouse is easy to use and can be used to quickly place the cursor anywhere on the screen it is inexpensive it also helps to quickly and easily draw figures with points and click capabilities make it a necessary to remember and type in commands.

Trackball:

Trackball is a pointing device that is used to control the position of the cursor on the screen. It is usually used in Notebook computers, where it is placed on the keyboard that trackball is nothing but an upside down Mouse where the ball rotates in place within a socket. The user roles able to position the cursor at an appropriate position on the screen and then click one of the buttons near the track ball that to select objects or to position the cursor for text entry.
                   Remove the pointer, ball is rotated with thumb common singers on the palm of the hand that one's stages of the tribal over a mouse is that the former is stationary and so it does not require much space to use. Moreover, individual track balls can be placed on any type of surface, including the users lab. These advantages make tribals very popular pointing devices for portable computers and mobile phones.
                
The advantages of track molluscs that the trackball provides better resolution and it occupies space and also it is easier to use as compared to mouse as its use in was left hand and ARM moments.

And disadvantages of trackball is that the trackball chamber is often covered with dust, so it must be cleaned regularly.

Touchpad:
Touchpad is a small, flat, rectangular stationary pointing device with the sensitive surface of 1.5 -2  square inches. The user has to slide his or her finger tips across the surface of the Pack 2.2 a specific object on the screen. The surface translate the motion and position of the users finger to a relative position on the screen. There are also buttons around the edge of the pad that work like mouse buttons. Touchpads are widely used in laptop and are inbuilt on the laptop keyboards for stop they can also be attached to a PC or be used with personal digital assistants and iPods.

The working of a Touchpad is similar to that of a mouse or a trackball the pressure of the finger on the surface leads to a capacitance affect which is detected by the services centres and appropriate signals to the CPU, which interprets them and displays the pointer on the screen.

Some advantages off Touchpad is that Touchpad occupy less space and they are easier to use as command to a mouse as their use in was left hand and ARM moments and Touchpad is enabled in the keyboard and its the need to carry an extra device.

please support 

Comments

Post a Comment

Popular posts from this blog

Libraray Fine Hackerrank solution in C || Balanced Brackets Hackerrank solution in C

-
  Library Fine Your local library needs your help! Given the expected and actual return dates for a library book, create a program that calculates the fine (if any). The fee structure is as follows: If the book is returned on or before the expected return date, no fine will be charged (i.e.:  . If the book is returned after the expected return  day  but still within the same calendar month and year as the expected return date,  . If the book is returned after the expected return  month  but still within the same calendar year as the expected return date, the  . If the book is returned after the calendar  year  in which it was expected, there is a fixed fine of  . Charges are based only on the least precise measure of lateness. For example, whether a book is due January 1, 2017 or December 31, 2017, if it is returned January 1, 2018, that is a year late and the fine would be  . Function Description Complete the  libraryFine  function in the editor below. It must return an integer repres
Read more

Permutations of Strings hackerrank solution in C || Permutations of Strings

-
  Permutations of Strings Strings are usually ordered in lexicographical order. That means they are ordered by comparing their leftmost different characters. For example,   because  . Also   because  . If one string is an exact prefix of the other it is lexicographically smaller, e.g.,  . Given an array of strings sorted in lexicographical order, print all of its permutations in strict lexicographical order. If two permutations look the same, only print one of them. See the 'note' below for an example. Complete the function  next_permutation  which generates the permutations in the described order. For example,  . The six permutations in correct order are: ab bc cd ab cd bc bc ab cd bc cd ab cd ab bc cd bc ab Note:  There may be two or more of the same string as elements of  . For example,  . Only one instance of a permutation where all elements match should be printed. In other words, if  , then print either   or   but not both. A three element array having t
Read more

Introduction to C part 2

-
                                   C programming hello friends,this is second part of introduction of C. Identifiers: Identifiers help us to identify data and other objects in the program. Identifiers are basically the name given to program elements such as variables,array and functions. Identifiers cannot include any special characters or punctuation marks except the underscore. Keywords cannot be used as identifiers. Identifiers must began with a letter or an underscores. Basic Data Types in C: C language provide very few basic data types. Variables: A variable is defined as a meaningful name given to a data storage location in computer memory.C language supports two basic kinds of Variables- numeric and character. Constants: Constants are identifiers whose value do not change.While value of variables can be changed at any time. Input/output statement in C: printf: The printf function is used to display information required by the user and also d
Read more