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C++ Articles
Page 312 of 597
C++ Program to Show the Duality Transformation of Line and Point
The duality transformation is concept in computational geometry that maps coordinate points to lines and lines to coordinate points. In this article, we will learn all about the duality transformation of lines and points, and implement C++ code to show this transformation. What is Duality Transformation? The duality transformation is a process that converts 2 dimensional lines and coordinates into dual plane. In this transformation, a point in the 2D plane can be represented as a line in the dual space, and a line in the 2D plane can be represented as a point in the dual space. This ...
Read MoreC++ Program to Search for an Element in a Binary Search Tree
A Binary Search Tree (BST) is a type of binary tree such that the left subtree has elements smaller than the root element and the right subtree has elements greater than the root element. In this article, our task is to search for an element in the given Binary Search Tree. Characteristics of Binary Search Tree Here are some of the characteristics of the BST: The left subtree of the BST has elements less than the root element. The right subtree of the BST has elements greater than the root ...
Read MoreHow do I define string constants in C++?
In C++, a string constant also called a string literal is a fixed sequence of characters enclosed in double quotes (" "). For example: "This is a string" and it is used to read-only memory, and its value cannot be changed during the program. Defining C++ Strings ConstantsYou can define your own named string constants by using: String Literals The const keyword The #define preprocessor directive The constexpr keyword(in modern C++) Let us understand each type of String Constant in C++ by ...
Read Moreenum vs. const vs. #define in C/C++
The #define, const, and Enum are all used for declaring constant values, but their behaviours and use cases differ. The #define is a preprocessor directive, which is used to define a macro (it is a string or name, in which you can assign a constant value), whereas const is a keyword with which you can declare a variable with a constant value. Whereas, an Enum is a special user-defined data type that represents a group of constants. In the following article, we will learn about all three in detail. Enumeration (Enum) An Enumeration (or Enum) is a user-defined data type ...
Read MoreWhat is the difference between iostream and iostream.h in C++?
Both and are the header files of C++ language. The .h extension was common in older, non-standard implementations like Turbo C++. The has been deprecated in modern C++ compilers and the became part of the C++ standard starting from the 1998 ANSI/ISO standard. The Header File The iostream.h header file was part of the early 1990s I/O streams library, developed at AT&T for use with early C++. At that time, C++ was not yet standardized. The purpose of this header file is used to perform the input-output operations. Example Following is an example of iostream.h as per ...
Read MoreHow to create timer using C++11?
The term "timer" is used to define the time based operations on hours, minutes, and seconds. Here, we can use the chrono library of C++ that helps to set the different timer operations like countdown, delayed, current time, etc. In this article, we will learn how to create a timer using C++. Timer Properties There are various properties to consider for building a timer in C++ program: Integer: int (milliseconds to wait until to run code). Boolean: bool (If this is true, it returns instantly, and run the code after specified ...
Read MoreScope Resolution Operator vs this pointer in C++
Both scope resolution operator and 'this' pointer are used for different purposes in the C++ programs. The scope resolution operator is used to access static or class members whereas this pointer is used to access object members when there is a local variable with the same name. Scope Resolution Operator in C++ The concept of scope resolution operator (::) is used in Object-Oriented Programming (OOPs) and namespace standard that can used to access something belongs to a specific scope, such as a class or namespace. Syntax It's syntax is as follows: :: Example In this program, we use ...
Read MoreWhat is the C++ equivalent of sprintf?
The sprintf() function of C library equivalent to C++ that is used to create strings with a specified format like custom text with numbers or names. In C++, we can perform the same operation as in C with the help of ostringstream.C++ std::ostringstreamThe ostringstream is known for the output string stream and is defined under header file. This is used to build the string by writing some text into it. Syntax i. Following is the basic syntax of sprint() function in C: int sprintf(char *str, const char *format, ...); ii. Here, we show the syntax of C++ function ...
Read MoreCalling a member function on a NULL object pointer in C++
You can call a class member function using a NULL object pointer in C++. This is an undefined behavior and there is no guarantee about the execution of the program. The actual results depend on the compiler used. Class Member Function A class member function is a function that is defined either inside a class or outside a class using a scope resolution operator. Example Here is an example of class member functions in C++ where the print() function is an example of the Inside class function and the print2() function is ...
Read MoreSelf Destructing Code in C
The self-destructing code is a type of program that can delete itself. It automatically executes the program and then removes the executable file once the execution is done. In this article, we will learn how to write self-destructing code for a C program. Write a Self Destructing Code in C++ You can write a self-destructing program that deletes its own executable file after it finishes running by using the remove() function. The remove() function is a built-in function from the C standard library () that deletes the specified file from the file system. To delete the program's own executable file, ...
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