Flow control statements allow a programmer to check conditions and based on the
results of the program. If there is a problem in code and goes to that certain line
of code, but if the code runs true it will repeatedly keep running. Also through
flow control statements you can use break and continue statements to continue an
iteration and terminate it. The good thing about C# is it can modularize code into
manageable chunks and complex code can be executed through C#. A great
example of C# being used is when college students are trying to get admitted into
college like text scores, financial standing and GPA. Where C# comes into play
is colleges run out of space and they have limited financial aid to give out,
having C# would find a loophole and notify the school if there was space and
financial aid available last minute for a student if another student leaves. It
wouldn't be possible to write software to check various conditions and change
execution paths. Flow control in applications is accomplished using conditional
operators and Booleans to railroad designated inputs to their ideal outputs. These
tools allow for applications to fulfil a variety of select needs by associating
actions on a user interface to Boolean values which themselves are tied to
actionable code. This conditional code is structured to the order of its designer
provide functionality when needs are met. The process is multiplied to create an
application with a host of uses. An example application would be a basic match-
3 puzzle game for iOS. The Ui for the app is going to be “minimalistic”.
There’d be a PLAY, OPTIONS, CREDITS, and “another game I made here”
button. All this could be tied to a branch of “if” statements that proceed to their
corresponding screens. Functions for the game would be tied to “start”, ”pause”,
”play” and ”share” where when conditionally read as TRUE would execute their
operations allowing the user to participate in my crafted experience at their own
leisure. Flow control allows for a flow to be controlled. That is in my eyes a
tailored experience that can be operated and observed by a participant. The
concept as applied to programming applies a level of automation to human
interactions that facilitate end-to-end transactions of all types. Flow control and
functions operate in an application like how the USB symbol looks. There is a
starting point, multiple paths, and the function calls would represent the tops. The
USB symbol resembles this style of graph that I would use to map out the
functions and flow control. The USB symbol is a great example for this especially
when you put multiple in a graph. The Large circle would be the starting point,
the smaller circle, triangle, and the square would be the different paths or if
statements. The different tips would be the end of the function but depending on
the point, it would point to or call another function. Even the paths in the USB
could represent paths in a program, The long triangle would represent the normal
flow and the two sides would be the if statements that could result in a differing
path to another function. I think that if you were to add two symbols to a graph,
it probably would not work as I would want it to but the symbol would still be
a great representation for flow control and functions. A good example of a simple
weather apps are the ones found on IOS and Android that provides users with the
current weather conditions, humidity, wind speed, and a five to seven-day forecast.
The main function usually starts displays the weather and temperature for the day
on the home screen. The apps have the main function call different sub-functions
to display the current weather conditions and the five to seven-day forecast. Sub-
functions are responsible for retrieving data from an external API, processing the
data, and displaying the results in a user-friendly format.The apps always allow
you to select the user location by using flow control to prompt the user to enter
a location from a list. Once the location has been selected the app calls a
function to retrieve weather data for that location. When the weather is displayed,
flow control is used to determine how to display the results based on the user's
options selected. Flow control and functions allow weather apps to be more
flexible, modular, and easier to maintain. It allows developers to reuse code,
reduce redundancy, and make the code easier to understand. Flow control, on the
other hand, creates different paths for the user to customize the information they
wish to have displayed, making the app more responsive and user-friendly. Flow
control is a basic but very important/powerful concept in programming. It allows
the programmer to have control of how the lines of code execute and which ones
execute. One of the simplest examples can a discount if a customer purchases
$100 or more of the product. If the purchase is greater then $100USD, a 10%
discount will be given.
Flow Control Example
If the customer bought $100 USD or more in product
xx xx xx xx xx xx xx xx xx xx xx ((Unit Price X # of Units) *.9)
If the customer bought less than $100 USD in product
xx xx xx xx xx xx xx xx xx xx xx Unit Price X # of Units
Not both of these lines of code will execute. One or the other and then the
appropriate math will be done based on the purchase price. Flow control allows
the code to be more efficient, maintainable, flexible, and scalable over time.
Allowing the program, the ability to decide which line of code will be executed
next means the code doesn’t have to go line by line but can skip lines of code
based on previous lines of code’s results. This makes the code much more usable
and allows for many more scenarios to be solved by the program. Finally flow
control will allow the programmer to write less code as the flow control can
allow for the same code to be reused in a loop till X happens for an example.
If less than 25, repeat. The flow control will reuse the same line of code or lines
of code till 25 has been met. Flow control and functions are important concepts
in programming that enable developers to create complex and flexible applications.
In a weather forecasting application, flow control is used to determine how the
program behaves in different scenarios. For example, if the user enters an invalid
location, the application would display an error message and prompt the user to
try again. Functions break down the program into smaller, reusable pieces that can
be combined to perform specific tasks, such as formatting the data returned from
the API or generating activity recommendations based on weather conditions. By
using flow control and functions, developers can create applications that are easy
to modify and extend. This means that new functions can be added, or existing
ones modified without having to change the main function's code. For instance, if
the application needs to support multiple weather APIs or display more detailed
weather information, developers can modify the existing functions or add new ones
to achieve this.Flow control and functions are powerful tools that enable developers
to create flexible, maintainable, and extensible applications. They allow developers
to create applications that can adapt to changing requirements and provide a better
user experience. In the case of a weather forecasting application, flow control, and
functions would be used to handle user input, query the weather API for data,
and display the results, as well as generate actionable recommendations based on
the weather conditions. An example application is one where students are being
evaluated for admission to a university; various conditions need to be checked
such as test scores, GPA, statement-of-purpose, financial status - and flow control
statements are required to decide whether a student can be granted admission or
not and also whether the student can be considered eligible for financial aid. Also,
there are limited seats available in each course and there is a budget for financial
aid, so loops come in handy to grant admission to students as long as seats are
available and as long as the aid budget is not exhausted. Flow control also comes
into play if a student declines an admission, and an alternate student needs to be
chosen for admission from the waiting list. For code that is repeated (e.g. the
same logic applies with slight variations for domestic, in-state, out-of-state and
international students), moving the concerned code to a function allows us to avoid
repeating very similar code in multiple places. Without flow control, it would be
impossible to write software to check various conditions and change execution
paths based on these, hence these are fundamental to C# (and any programming
language). Flow control in an application is used to help program execution take
various paths. Often times when the flow control sends the program execution a
certain way different functions could be called. It is the functions in your program
that will not only be called based on flow control but will be called and within
them have flow control and even more functions able to be called.
For example, lets say you have a web based account registration application. Users
will be required to fill out certain fields such as first name, last name, email and
phone number. A function be called once the user hits the submit button in order
to check the information. Inside the function could be flow control such as "if"
statements to check that a value was entered and that it was a valid value. The
first step to any language is syntax, but there is a lot more to building software
system solutions than just building a system that compiles and runs. (More on
performance in future weeks). Most of us will work for an organization where we
are part of a development team. The ability to adhere to standards for code
development, data security/integrity, and performance will at the top of the priority
list for any development project. Thus, the introduction of style guides. A style
guide is typically a document that has rules and guidelines about how to write
code. This is typically language-specific but there are organizational style and
standards that will be applied across all languages and development platforms. C#
has several types of flow control constructs that can be found in other
programming languages, such as loops, switches, and conditionals but it also has
some features and syntax for flow control.
A good example is "yield return" statement that allows creation of iterators that
can repeat a group of values over and over making it easier for working with
large data sets. It also has the "lock" statement that allows multithreading, creating
critical sections of code that can be used by one thread at a time. It helps
prevents race conditions and synchronization issues. In Conclusion C# as a lot of
the same flow control that other languages have. And do not let me forget to
reiterate that it is one of the very important languages used to write Operating
system like IOS, Android, Linux, Windows and Mac OS. It is a trusted language
used for generations of platforms that have come and gone over the many years.
That is what makes it a great tool, is its unique features and Syntax to managing
program flow and creating efficient and effective code. The Control Flow
Statements in C# are the statements that Alter the Flow of Program Execution and
provide better control to the programmer on the flow of execution. The Control
Flow Statements are useful to write better and more complex programs. A program
executes from top to bottom except when we use control statements. We can
control the order of execution of the program, based on logic and values.
