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Articles on Trending Technologies
Technical articles with clear explanations and examples
Toggle all characters in the string in C++
This program translates the characters of a string into uppercase. However, this task can be easily achieved by using the toUpper() method of the c++ class library. But in this program, we perform this by calculating the ASCII value of characters in uppercase. The Algorithm is as follows;AlgorithmSTART Step-1: Declare the array of char Step-2: Check ASCII value of uppercase characters which must grater than A and lesser than Z Step-3: Check ASCII value of lower characters which must grater than A and lesser than Z ENDThe toggleChar() method gets the array of characters as an input. ...
Read MoreSwap Upper diagonal with Lower in C++
This tutorial is designed to swap the upper row of a three-diagonal array to its lower one using c++ code. Moreover, if a three-diagonal array is an input, the coveted results must be something like that as;For this, the course of action is briefed in the algorithm as follows;AlgorithmStep-1: Input a diagonal array Step-2: Pass it to Swap() method Step-3: Traverse the outer loop till 3 Step-4: increment j= i+ 1 in the inner loop till 3 Step-5: put the array value in a temp variable Step-6: interchange the value arr[i][j]= arr[j][i] Step-7: put the temp data to arr[j][i] Step-8: ...
Read MoreHow to find the minimum and maximum element of an Array using STL in C++?
Here we will see how to find the maximum and minimum element from an array. So if the array is like [12, 45, 74, 32, 66, 96, 21, 32, 27], then max element is 96, and min element is 12. We can use the max_element() function and min_element() function, present in algorithm.h header file to get the maximum and minimum elements respectively.Example#include #include using namespace std; int main() { int arr[] = {12, 45, 74, 32, 66, 96, 21, 32, 27}; int n = sizeof(arr) / sizeof(arr[0]); cout
Read MoreHow to find the sum of elements of an Array using STL in C++?
Here we will see how to find the sum of all element of an array. So if the array is like [12, 45, 74, 32, 66, 96, 21, 32, 27], then sum will be: 405. So here we have to use the accumulate() function to solve this problem. This function description is present inside header file.Example#include #include using namespace std; int main() { int arr[] = {12, 45, 74, 32, 66, 96, 21, 32, 27}; int n = sizeof(arr) / sizeof(arr[0]); cout
Read MoreSqrt, sqrtl, and sqrtf in C++ programming
Math ClassThis article demonstrates the usage of math class essentials functions sqrt(), sqrtl(), and sqrtf() to calculate the square root of double, long, and float type variables with precision respectively. The Math class of C++ offers a wide range of functions to calculate mathematical calculations including sin, cos, square root, ceil, floor, etc..It is, therefore, mandatory to import the definition of header class library in the program in order to avail all calculative methods.Sqrt MethodThe double sqrtl () method of the Math class returns the square root of a double variable with precision. The syntax of this function is ...
Read MoreFill missing entries of a magic square in C++
Suppose we have one 3x3 matrix, whose diagonal elements are empty at first. We have to fill the diagonal such that the sum of row, column and the diagonal will be same. Suppose a matrix is like −036505470After filling, it will be −636555474Suppose the diagonal elements are x, y, z. The values will be −x = (M[2, 3] + M[3, 2])/ 2z = (M[1, 2] + M[2, 1])/ 2y = (x + z)/2Example#include using namespace std; void displayMatrix(int matrix[3][3]) { for (int i = 0; i < 3; i++) { for (int j = 0; j < 3; j++) cout
Read MoreReplacing space with a hyphen in C++
In this C++ program, the space in the string will be replaced with the hyphen. Firstly, the length of the string is determined by the length() function of the cstring class, then hyphen is filled into the space of the sentence by traversing the string as follows.Example#include #include using namespace std; int main(){ // raw string declaration string str = "Coding in C++ programming"; cout
Read MoreHow to reverse an Array using STL in C++?
Here we will see how to reverse an array using STL functions in C++. So if the array is like A = [10, 20, 30, 40, 50, 60], then the output will be B = [60, 50, 40, 30, 20, 10]. To reverse we have one function called reverse() present in the header file . The code is like below −Example#include #include using namespace std; int main() { int arr[] = {10, 20, 30, 40, 50, 60}; int n = sizeof(arr) / sizeof(arr[0]); cout
Read MoreHow to create a shallow copy of Hashtable in C#?
To create a shallow copy of Hashtable, the code is as follows −Exampleusing System; using System.Collections; public class Demo { public static void Main() { Hashtable hash = new Hashtable(); hash.Add("1", "AB"); hash.Add("2", "BC"); hash.Add("3", "DE"); hash.Add("4", "EF"); hash.Add("5", "GH"); hash.Add("6", "IJ"); hash.Add("7", "KL"); hash.Add("8", "MN"); hash.Add("9", "OP"); hash.Add("10", "QR"); Console.WriteLine("Hashtable elements..."); foreach(DictionaryEntry d in hash) { ...
Read MoreHow to traverse a C++ set in reverse direction?
Suppose we have a set, then we have to traverse the set in reverse direction. So if the set is like S = [10, 15, 26, 30, 35, 40, 48, 87, 98], then the output will be: 98 87 48 40 35 30 26 15 10.To traverse in reverse order, we can use the reverse_iterator. Here we will use the rbegin() and rend() function to get the begin and end of the reverse iterator.Example#include #include using namespace std; int main() { int arr[] = {10, 15, 26, 30, 35, 40, 48, 87, 98}; set my_set(arr, arr + sizeof(arr) / sizeof(arr[0])); set::iterator it; cout
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