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Articles by Arnab Chakraborty
Page 310 of 377
C++ Program to Iterate Over a Dictionary
Although C++ lacks dictionaries, it does have a structure akin to them called a map. Two values−key and mapped values−are contained in each entry of a map. Each item is indexed using the key value, whereas the mapped values are the values connected to the keys. The mapped values may or may not be unique, but the keys are always unique. In this tutorial, we'll look at iterators and how they work with maps. Iterators in C++ An iterator object points to one element in a range of elements. Iterators are generally used with arrays and containers like vectors and ...
Read MoreC++ Program to Create a Dictionary with a Dictionary Literal
Dictionaries aren’t present in C++, but it has a similar structure called map. Each entry of a map has a couple of values in it, which are key and mapped values. The key value is used for indexing each entry, whereas the mapped values are the values that are associated with the keys. Keys are unique, but the mapped values may or may not be unique. In this article, we take a look at how to initialize a map object and create it from another map object. Creating an empty map To create a map object, we need to import ...
Read MoreC++ Program to Create an Empty Dictionary
A map is a data structure in C++ and can be found in the STL class std::map. It is similar to the dictionaries that we see in Python. Each entry in a map object has a pair of values, one of which is the key value and the other is the mapped value. An entry on the map is found and uniquely identified using the key value. The key value in a map must always be unique, but the mapped value is not required to be. In this article, we focus on creating an empty map object. Creating an ...
Read MoreC++ Program to Print Square Star Pattern
Designing patterns using special characters like stars (asterisks) is one of the most common types of programs to understand looping concepts. There are plenty of other star pattern programs which are very common in nature. The star pyramid is fairly simple but much more effective to understand looping statements and their conditions. In this article, we will see how to display a square pattern using stars in C++. Initially the complete square and then the hollow square. Displaying Complete Square Pattern * * * * * * * * * * * * * * * * * * * ...
Read MoreC++ Program to Print Upward Triangle Star Pattern
When learning programming, displaying a star pattern makes looping concepts easier to get. The star patterns are various designs that use asterisks to create hard or hollow triangles or diamond forms. This article will demonstrate a C++ implementation for an upward triangle that is center-aligned. The following table will contain the logic we create to print stars. The following table can help us understand. * * * * * * * * * * * * * * * ...
Read MoreC++ Program to Print Mirror Upper Star Triangle Pattern
When learning programming, displaying a star pattern makes looping concepts easier to comprehend. The star patterns are various designs that use asterisks to create hard or hollow triangles or diamond forms. This article will demonstrate a C++ right-aligned mirrored upper triangle pattern. The following table will contain the logic we create to print stars. The following table can help us understand. * * * * * * * * * * * * * * * * * * * ...
Read MoreC++ Program to delete an item from the array without using the library function
The purpose of an array is to provide access to the same type of data across several memory locations via base addresses and indexes. In a wide variety of applications, arrays are used to store data for a wide range of reasons. The array must efficiently handle adding, removing, and updating elements, just like other data structures. Both static and dynamic arrays include a number of library functions in C++ that handle various array-related operations. But in this article, we will see how to delete an element from an array without using any library functions in C++. Understanding the concept ...
Read MoreC++ Program to Print Upper Star Triangle Pattern
Asterisks "*" are used in star patterns to represent various shapes, such as right-angled triangles or other triangular and diamond shapes. Star patterns are the names for these forms. This tutorial will demonstrate how to use C++ to display the upper left triangle star pattern. Here, we accept as an input the number of lines in the star design. For that many lines, the pattern will be printed. The following table will contain the logic we create to print stars. The following table can help us understand. * * * * * * * * * * * * * ...
Read MoreC++ Program to Print Right Triangle Star Pattern
Asterisks "*" are used in star patterns to represent various shapes, such as triangles, diamonds, hollow shapes, etc. Star patterns are the names for these forms. This tutorial will illustrate how to use C++ to display the left triangle star pattern where the triangle is aligned to the left. Here, we accept as an input the number of lines in the star design. For that many lines, the pattern will be printed. The following table will contain the logic we create to print stars. The following table can help us understand. ...
Read MoreC++ Program to get the magnitude of the given number
The magnitude of a given number means the difference between that particular number and zero. It can also mean the size of a mathematical object in terms of other objects of the same kind. We will follow the first definition here, and the magnitude or the absolute value of a number is represented as |x|, where x is a real number. We explore the ways to display the absolute value or magnitude of a given real number. Naïve method We can write a program ourselves that find out the magnitude of a given real number. The example is explained below. ...
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