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Articles by Akansha Kumari
Page 4 of 6
What are Boolean Literals in C++?
Boolean Literals In C++, Boolean literals are the values, which are assigned to variables of the Boolean data type. A Boolean literal represents two values: true or false, which are internally represented as 1 and 0 respectively. A Boolean literal occupies 1 byte (8 bits) of memory and is used for conditions, flags and logical checks. Declaring Boolean Variables You can declare the boolean variables and assign the boolean literals to them by the given following. In this variable1 and variable2 is assigned with boolean literals true and false respectively in C++. bool variable1 = true; bool variable2 = false; ...
Read Morefmax() and fmin() in C++
The fmax() and fmin() functions in C++ are used to check the maximum or minimum of two floating-point numbers. These functions are defined under the header file of the C++ standard library. C++ fmax() function The fmax() is used to compare and return the larger of two floating-point values. These floating point values can be float, double, and long double. Syntax data_type fmax(data_type value_1, data_type value_2); Here, data_type could be float, double and long double. C++ fmin() function The fmin() is used to compare and return the smaller of two floating-point values. These floating point values can be float, ...
Read MoreWhat are the advantages of C++ Programming Language?
C++ is a general-purpose and high-level programming language, which was created by Bjarne Stroustrup in the early 1980s. It is an extension of the C programming language, which means it has features of C (procedural programming) with the added feature of object-oriented programming. It has become a widely used language, especially in competitive programming and is supported on most platforms such as Windows, Linux, Unix, and macOS. Advantages of C++ Programming LanguageIn this article we will discuss the advantages of using C++ language: C++ is a highly portable language that supports multi-device and multi-platform application ...
Read MoreData Type Ranges and their macros in C++
In some cases, especially in competitive programming, we may need to specify the minimum or maximum value of a specific datatype. In C++, each data type has a different memory range under which we can define and declare the value of that data type. But it becomes difficult to remember all the large ranges of each data type. So, C++ has introduced the macros that are used to represent the minimum and maximum range of some datatype. And some data types do not have macros for minimum values, because they are unsigned (means, hold only positive value). So, as their ...
Read MoreCan a C++ variable be both const and volatile?
Yes, In C++ both const and volatile keywords can be applied together in a variable. But it is used in situations like a read-only hardware register, or an output of another thread. In C++, they both are type qualifiers, which are used for different purposes in programming. In this article we will see the use of both keywords in C++. const Keyword The const keyword is used to declare the value of a variable as constant, meaning its value cannot be changed or modified later once initialized with const keyword. Example In this example PI value is set as constant ...
Read MoreWhat does the restrict keyword mean in C++?
There's no such keyword in C++. A list of C++ keywords can be found in section 2.11/1 of the C++ language standard. It is a keyword in the C99 version of the C language and not in C++. In C, A restrict qualified pointer (or reference) is basically a promise to the compiler that, within the scope of the pointer, the target of the pointer will only be accessed through that restrict qualified pointer (and pointers copied from it). C++ compilers also support this definition for optimization purposes, but it is not a part of the official language specification. ...
Read MoreTokens vs Identifiers vs Keywords in C++
In C++, tokens, identifiers, and keywords all are fundamental elements of a program. Tokens are the smallest units of code which are combine together to form complete program, where both keywords and identifiers are the types of tokens. The keywords are reserved words in the language, where each provides separate meanings to code and cannot be used as names by the programmer, whereas identifiers are names defined and used by programmers to represent variables, function or other user-defined elements. In this article, we will learn about all three in detail. Tokens in C++ A token is the smallest element of ...
Read MoreWhat is the difference between #define and const Keyword in C++?
In C++, both #define and const are used to define constants in a program. The #define is a preprocessor directive that creates macros with their fixed values whereas const is a keyword which declare value of variable as constant, meaning its value cannot be changed after intialization. Therefore they have different use cases in different scenarios. In this article, we will learn the differences between these two in detail. #define in C++ The #define is a preprocessor directive that is used to define or assign macros ( name or string ) with a constant value. So wherever the macro occurs ...
Read MoreGetting Started with C++ in Visual Studio
In this article, you will learn the setup to build and compile the C++ code in Visual Studio. Here you will become familiar with many of the tools and dialog boxes that you can use when you develop applications in C++. In this, we'll create a "Hello, World" style console application to help you learn more about working in this IDE. Prerequisites For this, you need a copy of Visual Studio 2017 version 15.3 or later, with the Desktop development with C++ workload installed. You can follow this guide to see the full installation procedure of Visual Studio [Link]. Create ...
Read MoreWhat does an auto keyword do in C++?
The auto keyword in C++ is used to automatically determine the type of variables from their initializer. This means you don’t need to explicitly tell the compiler the variable's data type. It lets the compiler determine the variable's type during compile time.C++ auto KeywordAuto was a keyword that C++ "inherited" from C that had been there nearly forever, but virtually never used. All this changed with the introduction of auto to do type deduction from the context in C++11. Before C++ 11, each data type needs to be explicitly declared at compile time, limiting the values of an expression at ...
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