Ari  Bogisich

Ari Bogisich

1595702520

C#: Why You Should Prefer the is Keyword Over the == Operator

In the previous blog post you learned about different ways to do a null check. The traditional way is to use the == operator:

if(person == null) { }

Since C# 7, you can use the is keyword to do a null check:

if(person is null) { }

The is keyword has the big advantage that it ignores any operator overloads that are defined on the class of the instance you want to check. When you use the == operator, it could be possible that this operator is overloaded and you get an unexpected result. Let’s look at a simple example.

The following code snippet shows the Main method of a .NET Console app. At the beginning, a person variable of type Person is declared, and it is initialized with null. Then the results of person == null and person is null are written to the Console.

static void Main(string[] args)
{
  Person person = null;

  Console.WriteLine("Is Person null?");

  Console.WriteLine($"== says: {person == null}");

  Console.WriteLine($"is says: {person is null}");
}
public class Person
{
  ...
}

#.net #programming-c #csharp

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C#: Why You Should Prefer the is Keyword Over the == Operator
Abdullah  Kozey

Abdullah Kozey

1617738420

Unformatted input/output operations In C++

In this article, we will discuss the unformatted Input/Output operations In C++. Using objects cin and cout for the input and the output of data of various types is possible because of overloading of operator >> and << to recognize all the basic C++ types. The operator >> is overloaded in the istream class and operator << is overloaded in the ostream class.

The general format for reading data from the keyboard:

cin >> var1 >> var2 >> …. >> var_n;

  • Here, var1var2, ……, varn are the variable names that are declared already.
  • The input data must be separated by white space characters and the data type of user input must be similar to the data types of the variables which are declared in the program.
  • The operator >> reads the data character by character and assigns it to the indicated location.
  • Reading of variables terminates when white space occurs or character type occurs that does not match the destination type.

#c++ #c++ programs #c++-operator overloading #cpp-input-output #cpp-operator #cpp-operator-overloading #operators

Tamale  Moses

Tamale Moses

1624240146

How to Run C/C++ in Sublime Text?

C and C++ are the most powerful programming language in the world. Most of the super fast and complex libraries and algorithms are written in C or C++. Most powerful Kernel programs are also written in C. So, there is no way to skip it.

In programming competitions, most programmers prefer to write code in C or C++. Tourist is considered the worlds top programming contestant of all ages who write code in C++.

During programming competitions, programmers prefer to use a lightweight editor to focus on coding and algorithm designing. VimSublime Text, and Notepad++ are the most common editors for us. Apart from the competition, many software developers and professionals love to use Sublime Text just because of its flexibility.

I have discussed the steps we need to complete in this blog post before running a C/C++ code in Sublime Text. We will take the inputs from an input file and print outputs to an output file without using freopen file related functions in C/C++.

#cpp #c #c-programming #sublimetext #c++ #c/c++

Dicey Issues in C/C++

If you are familiar with C/C++then you must have come across some unusual things and if you haven’t, then you are about to. The below codes are checked twice before adding, so feel free to share this article with your friends. The following displays some of the issues:

  1. Using multiple variables in the print function
  2. Comparing Signed integer with unsigned integer
  3. Putting a semicolon at the end of the loop statement
  4. C preprocessor doesn’t need a semicolon
  5. Size of the string matters
  6. Macros and equations aren’t good friends
  7. Never compare Floating data type with double data type
  8. Arrays have a boundary
  9. Character constants are different from string literals
  10. Difference between single(=) and double(==) equal signs.

The below code generates no error since a print function can take any number of inputs but creates a mismatch with the variables. The print function is used to display characters, strings, integers, float, octal, and hexadecimal values onto the output screen. The format specifier is used to display the value of a variable.

  1. %d indicates Integer Format Specifier
  2. %f indicates Float Format Specifier
  3. %c indicates Character Format Specifier
  4. %s indicates String Format Specifier
  5. %u indicates Unsigned Integer Format Specifier
  6. %ld indicates Long Int Format Specifier

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A signed integer is a 32-bit datum that encodes an integer in the range [-2147483648 to 2147483647]. An unsigned integer is a 32-bit datum that encodes a non-negative integer in the range [0 to 4294967295]. The signed integer is represented in twos-complement notation. In the below code the signed integer will be converted to the maximum unsigned integer then compared with the unsigned integer.

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#problems-with-c #dicey-issues-in-c #c-programming #c++ #c #cplusplus

Shaylee  Lemke

Shaylee Lemke

1589818380

C++ Tutorial - Short Hand If Else (Ternary Operator ) In C++

In this C++ Tutorial, we are going to talk about Short Hand If Else (Ternary Operator ) In C++ . also we can call it ternary operator, because it consists of three operands. and it can be used to replace multiple lines of code with a single line.

Youtube channel: Parwiz Forogh - https://www.youtube.com/watch?v=lui4XgKeb6c

#c #c# #c++ #programming-c

Var keyword in C# | C# Bangla Tutorial | Advanced C#

https://youtu.be/3oPEER0LdfQ

#oop in c# #object oriented programming #object oriented concept in c# #learn oop concept #advance c# #var keyword in c#