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C++ Articles
Page 347 of 597
C++ Program for Absolute Sum of Array Elements
In this problem, we are given an array of integers, and our task is to calculate the absolute sum of its elements. The absolute sum means the sum of the absolute values of all the array elements. In this article, we are going to learn how to compute the absolute sum of an array's elements using C++. Example 1 Input: arr = {-3, 2, -7, 4} Output: 16 Explanation: The absolute values of the array elements are: | -3 | = 3, | 2 | = 2, | -7 | = 7, | 4 | = 4. The sum of ...
Read MoreDescending order in Map and Multimap of C++ STL
Generally, the default behavior of map and multimap map is to store elements is in ascending order. But we can store element in descending order by using the greater function. Map in Descending Order We use a map to store elements in descending order with the help of the greater function. We perform various operations like inserting elements, finding an element, counting occurrences of keys, and removing elements from the map. Functions are used here - m::find() – Returns an iterator to the element with key value ‘b’ in the map if found, else returns the iterator to ...
Read MoreSorting a vector in C++
Sorting a vector in C++ means arranging its elements in a specific order, like ascending or descending. This is a common task when you need to organize data efficiently. C++ provides different ways to sort a vector. In this article, we will look at different ways to sort a vector in C++. Let's look at this example to better understand it: For the vector: V = {5, 3, 8, 1, 2} Sorted Output: {1, 2, 3, 5, 8} For the vector: V = {22, 23, 5, 6, 34} Sorted Output: {5, 6, 22, 23, 34} Approaches to ...
Read MoreJava Math subtractExact(long x, long y) method
We will discuss the Java Math subtractExact(long x, long y) method in Java and understand its functionalities and working. The subtractExact()is an inbuilt function in the Java Math library. The function returns the difference between the two parameters passed as arguments in the function. The function returns an exception when the returned value overflows the range of values of a particular data type. It is the most commonly used class for mathematical operations is the java.lang.Math class is a part of the Java Standard Library and is included in the java.lang package. Syntax Following is the syntax of the subtractExact() function ...
Read MoreHow will you compare namespaces in Python and C++?
Namespaces help in organizing code, managing the scope of variables and preventing naming conflicts. Python and C++ use namespaces, but they do so in different ways. Below is an overview of namespaces in both. Namespaces in C++ In C++, namespaces are created using the keyword 'namespace'. They are mainly intended to organize code into logical groups and avoid name conflicts, particularly when working with multiple libraries. Example In the following example we are going to how to use a namespace by utilizing '::' to access functions within that namespace. #include using namespace std; // first namespace namespace first_space ...
Read MoreC++ Program to Calculate Volume of Capsule
A capsule is a three-dimensional geometric shape that consists of a cylindrical body with hemispherical ends on both sides. The volume of a capsule can be calculated by adding the volume of the cylindrical part and the volume of the two hemispherical ends present on both sides of the cylindrical part. In this tutorial, we are going to discuss how to find the volume of a given capsule in C++ using different approaches. Formula for Volume of Capsule The formula for the volume of a capsule is as follows: Volume of Capsule = Volume of cylinder + Volume of both ...
Read MoreC++ Program to Print Hollow Square Pattern
When we start learning to code, practicing star patterns is one of the best ways to improve logic building. One of the simplest yet fascinating patterns is the hollow square pattern. In this article, we are going to learn how to print a Hollow Square Pattern using C++. What is Hollow Square Pattern? A hollow square pattern is a geometrical arrangement of stars forming a square shape, but the stars are present only at the boundary of the square. The stars are printed in such a manner that the edges of the square are filled with stars, while the interior ...
Read MoreRemove Duplicates from an Unsorted Array in C++
Problem Description In this problem, we are given an unsorted array, and the task is to remove all duplicate elements from the array. The resulting array should only contain unique elements. In this article, we are going to explore different approaches to removing duplicates from an unsorted array in C++. Example 1 Input: array = {4, 3, 2, 4, 1, 3, 2} Output: {4, 3, 2, 1} Explanation: The duplicate elements (4, 3, 2) are removed, leaving only unique elements. Example 2 Input: array ...
Read MoreC++ program to calculate potential energy if mass and height are given
What is Potential Energy? Potential energy is a type of stored energy stored by an object due to its position relative to other objects. It is an important concept in physics and is commonly calculated when studying objects in gravitational fields. In this tutorial, we are going to learn how to calculate the potential energy of an object in C++ if the mass and height are given. Formula for Calculating Potential Energy The formula for potential energy is as follows: Potential Energy = m × g × h Where:m is the mass of the object (in kilograms).g is the gravitational ...
Read MoreSetting up Sublime Text for C++ Competitive Programming Environment
The Sublime Text is a popular code editor due to its simplicity, speed and extensibility. While it may not have built-in C++ support, it's very easy to set up Sublime Text for competitive programming in C++. This guide will walk you through configuring Sublime Text to provide a smooth and efficient environment for C++ competitive programming. Steps to Set Up Sublime Text for C++ Competitive Programming 1. Install Sublime TextFirst, we need to install Sublime Text if you haven't already. Go to the Sublime Text website. Download and install the ...
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