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Articles by Arnab Chakraborty
Page 308 of 377
C++ Program to Print Spiral Pattern of Numbers
Displaying numbers in different formats comes under fundamental coding problems to learn different concepts of coding like conditional statements and looping statements. There are different programs where we have printed special characters like stars to make triangles or squares. In this article, we will print numbers in spiral form like a square in C++. We will take the number of lines n as input, then starting from the top-left corner we will move towards the right, then down, then left and then up, then again towards the right, and so on. Spiral Pattern with Numbers 1 2 ...
Read MoreC++ Program to Get Input from the User
While writing a program in any language, taking input is a fundamental job that we do in almost all programs. Sometimes we take input directly from the console or take the inputs from the files. Taking inputs from the files is somewhat beneficial because it does not require us to type inputs again and again, or sometimes we can save some good input test cases into a file. However, in this article, we are going to focus on console-based inputs. We will learn different techniques to get inputs from the user in C++. There are a few different approaches to ...
Read MoreC++ Program to calculate the Highest Common Factor
The highest Common Factor or Greatest Common Divisor are factors that are maximum and that can divide two or more values without generating any remainder. In this article, we shall discuss a few methods to perform HCF / GCD between two numbers in C++. This is simply a mathematical solution and there are several algorithms present to find GCD. The Euclidean method to find GCD is common. The same algorithm we will use in iterative mode, and recursive mode. Using Iterative method The iterative solution for the Euclidean gcd finding algorithm is shown in the algorithm section. Algorithm ...
Read MoreC++ Program to Compute the Sum of Diagonals of a Matrix
The utilization of 2-dimensional arrays or matrices is extremely advantageous for several applications. Matrix rows and columns are used to hold numbers. We can define 2D matrices in C++ using multi-dimensional arrays as well. In this article, we'll look at how to use C++ to calculate the diagonal sum of a given square matrix. The matrices have two diagonals, the main diagonal and the secondary diagonal (sometimes referred to as major and minor diagonals). The major diagonal starts from the top-left corner (index [0, 0]) to the bottom-right corner (index [n-1, n-1]) where n is the order of the square ...
Read MoreC++ Program to Find the Normal and Trace
2-Dimensional arrays or matrices are very much useful in several applications. Matrices have rows and columns and store numbers inside them. In C++ also we can define 2D matrices using multi-dimensional arrays. In this article, we will see how to calculate the Normal and the Trace of a given matrix using C++. The Normal is the square root of the sum of all elements present in the matrix. And the trace is the sum of elements present in the main diagonal. Let us see the algorithm and C++ code representation. Matrix Normal $\begin{bmatrix} 5 & 1& 8ewline 4 ...
Read MoreC++ Program to Print first letter of each word using regex
A useful tool for string operations is regex. This may be found in virtually all high-level current programming languages, including C++. Regular expressions (Regex) are utilized as general-purpose search patterns. For instance, by constructing a straightforward string known as a regular expression, we may implement password validation logic with at least one capital, one lowercase, one number, one special character, and a total length of at least 8 characters. In this tutorial, we'll look at how to use C++ to display only the first letters of words included within a specified string. Here, we'll look at a sentence that uses ...
Read MoreC++ Program to Swapping Pair of Characters
A string is a group of characters. They can be described as character arrays as well. An array of characters can be thought of as strings, and each string has a set of indices and values. The switching of characters at two specified indices in a string is one of the modifications we can sometimes make to strings. In this article, we will see how to swap two characters in a string from two given indices using C++. Syntax char temp = String_variable[ ] String_variable[ ] = String_variable[ ] String_variable[ ] = temp Using indices, ...
Read MoreC++ Program to Replace a Character at a Specific Index
Strings are a collection of characters. We can also say them as character arrays. Considering an array of characters as strings, the strings have specified indices and values. Sometimes we can perform some modification on strings, one such modification is replacing characters by providing a specific index. In this article, we will see how to replace a character from a specific index inside a string using C++. Syntax String_variable[ ] = In C++ we can access the string characters using indices. Here to replace a character with some other character at a specified index, we simply ...
Read MoreC++ Program to Iterate Over an Array
Arrays are data of the same type stored in contiguous locations in memory. To access or address an array, we use the starting address of the array. Arrays have indexing, using which we can access the elements of the array. In this article, we take a look at methods to iterate over an array. This means accessing the elements that are present in an array. Using for loop The most common method of iterating over an array is using for loops. We use a for loop to iterate through an array in the next example. One thing is to be ...
Read MoreC++ Program to Sort the Elements of an Array in Descending Order
Arranging data items in a proper form is an essential task while solving some problems in an efficient way. The element sorting problem is one of the most commonly discussed arranging problem. In this article we will see how to arrange the array elements in descending order (decreasing order of their values) in C++. There are many different sorting algorithms present in this domain to sort numeric or nonnumeric elements in a given order. In this article we will see only two simple methods of sorting. The bubble sort and the selection sort. Let us see them one by one ...
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