Programming Articles - Page 2052 of 3363

In this article we will be discussing the working, syntax and examples of isnormal() function in C++ STL.Isnormal() is a function which comes under the header file. This function is used to check whether the given number is a normal number or not.What is a normal number?A real number is known as a normal number if its base a number is neither zero, infinity, NAN or subnormal.Syntaxbool isnormal(float num);ParametersThe function accepts only one parameter which is num, of float type.Return valueIt returns 0 or 1, if the number is a normal number then the function returns 1 else 0.ExampleInput: ... Read More

In this article we will be discussing the working, syntax and examples of std::is_void template in C++ STL.is_void is a template which comes under the header file. This template is used to check whether the given type T is a void type or not.What is a void type in C++?In simple words void means “empty” or “nothing”. When we declare a function as void then it is assumed that this function will return nothing.We also declare void pointers, which are supposed to left unspecified. However, they must be referenced to another variable of other type, before the pointer is ... Read More

In this article we will be discussing the working, syntax and examples of std::is_unsigned template in C++ STL.is_unsigned is a template which comes under header file. This template is used to check whether the given type T is an unsigned type or not.What are unsigned data types in C++?Unsigned data types are those which we use knowing the values will not go in negative, like roll number, id of random numbers, etc.To make a type as unsigned we use keyword unsigned as prefix of the data type like −unsigned int;unsigned float;Syntaxtemplate is_unsigned;ParametersThe template can have only parameter of type ... Read More

In this article we will be discussing the working, syntax and examples of std::is_signed template in C++ STL.is_ signed is a template which comes under header file. This template is used to check whether the given type T is a signed type or not.What is a signed type?These are the basic arithmetic types, which contains sign value with them. All arithmetic data types are either signed and unsigned.Like we want to show the values in negative we use signed type.Like: -1 is signed int and -1.009 is signed float.By default all the types are signed to make them unsigned ... Read More

In this article we will be discussing the working, syntax and examples of std::is_pointer template in C++ STL.is_ pointer is a template which comes under the header file. This template is used to check whether the given type T is a pointer type or not.What is a Pointer?Pointers are non-static types which hold an address of another type or in other words which points to some memory location in the memory pool. With help of an asterisk (*) we define a pointer and when we want to refer the specific memory which the pointer is holding then also we ... Read More

In this article we will be discussing the working, syntax and examples of std::is_pod template in C++ STL.is_ pod is a template which comes under header file. This template is used to check whether the given type T is a POD(plain-old-data) type or not.What is POD(Plain old data)?Plain old data(POD) types are those types which are also in old C language. POD types also include scalar types. POD class type is that class type which is both, trivial (which can be initialised statically) and standard layout (which is a simple data structure like struct and union).Syntaxtemplate is_pod;ParametersThe template ... Read More

In this article we will be discussing the working, syntax and examples of std::is_fundamental template in C++ STL.is_ fundamental is a template which comes under the header file. This template is used to check whether the given type T is a fundamental data type or not.What is Fundamental type?Fundamental types are the built-in types which are already declared in the compiler itself. Like int, float, char, double, etc. These are also known as built-in data types.All the data types which are user-defined like: class, enum, struct, references or pointers, are not part of the fundamental type.Syntaxtemplate is_fundamental;ParametersThe template ... Read More

In this article we will be discussing the working, syntax and examples of std::is_final template in C++ STL.is_final is a template which comes under the header file. This template is used to check whether the given type T is a final class or not.What is a final class in C++?When we declare a class with the final specifier then it is called as Final Class. Final class is a special kind of class which can’t be extended to create another class. In C++ to make a class as a final we make a class as a friend and then ... Read More

JShell is an interactive tool that enables us to execute java code and displays the output instantly. JShell is the REPL(Read-Evaluate-Print-Loop) tool that runs from the command-line prompt. If we need to avoid the compilation-errors in JShell, then we must declare those variables before using it. The error message in JShell can use the notation "^--^" to highlight an error.In the below code snippet, the declaration of an int variable "div" attempts to use variables: num1, and num2 that has not been declared, so JShell reports a compilation error, indicating that the compiler was unable to find those variables.C:\Users\User>jshell | Welcome to JShell ... Read More

JShell is a java shell tool that has introduced in Java 9. It is an interactive tool that reads input, executes it, and prints it in the command-line prompt. We don't need to write a main() method to execute it like Java class.We can implement different collections includes set, list, and map in the JShell tool. The important collection is the Map interface, and it is a key-value pair. A Map doesn't contain duplicate keys and each key maps to at most one value.In the below example, we can able to implement the non-empty map.C:\Users\User>jshell | Welcome to JShell -- ... Read More