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C++ Articles
Page 538 of 597
Popular tools for data analytics in C++
Data analytics is the processing of data to extract useful information that supports the machine to make decisions. The processing of data involves cleaning, remodeling, and inspecting data.Data analytics requires high computing power as the data to process is too large. So there are specialized tools for data analytics.Some popular data analytics tools are −R programmingR is one of the best and most widely used tools for data analytics available for all major platforms like Windows, macOS, Unix. It has found usage in data modeling and statistics. Easily manipulation and representation of large data are done using R as it ...
Read MorePortable applications in Cloud and their barriers in C++
Cloud Computing − cloud computing or internet-based computing is storing and accessing of data on virtual servers that are hosted over internet on cloud servers instead of local server.Cloud computing provides the user with an option to use the data on the go. This increases the portability of work i.e. the data and processing of cloud computing can be used anywhere by the user. This is not device and location specific.This feature of cloud computing is important for corporates as they can use cloud services to run projects from virtual locations. The services like IAAS, PAAS, SAAS are used to ...
Read MoreMakeFile in C++ and its applications
In this tutorial, we will be discussing a program to understand MakeFile in C++ and its applications.The task is to break the entire program with MakeFile. It is usually done by making .cpp files and .h files with all the classes/functionalities and link them together.Examplemain.cpp#include #include "function.h" using namespace std; //main execution program int main(){ int num1 = 1; int num2 = 2; cout
Read MorePrint Immutable Linked List in Reverse in C++
Suppose we have an immutable linked list, we have to print out all values of each node in reverse with the help of the following interface −ImmutableListNode − This is an interface of an immutable linked list, we are given the head of the list.We have to use the following functions to access the linked list −ImmutableListNode.printValue() − This will print value of the current node.ImmutableListNode.getNext() −This will return the next node.So if the list is like: [0, -4, -1, 3, -5], then the output will be [-5, 3, -1, -4, 0]To solve this, we will follow these steps −Define ...
Read MoreAirplane Seat Assignment Probability in C++
Suppose n passengers board an airplane with exactly n seats. If the first passenger has lost the ticket and picks a seat randomly. But after that, the rest of passengers will follow these operations −Take their own seat written in the ticket if it is still available, Pick other seats randomly when they find their seat occupiedSo we have to find what is the probability that the n-th person can get his own seat? So if the input is 2, then the output will be 0.5. So the second person has a probability of 0.5 to get the second seat ...
Read MoreGet Equal Substrings Within Budget in C++
Suppose we have given two strings s and t of the same length. We want to change s to t. Changing the i-th character of s to i-th character of t will assign cost as |s[i] - t[i]| that is, the absolute difference between the ASCII values of the characters. We have also given an integer maxCost. We have to find the maximum length of a substring of s that can be changed to be the same as the corresponding substring of t with a cost less than or equal to maxCost.So if the input is like s = “abcd” ...
Read MoreRemove K Digits in C++
Suppose we have a non-negative integer num that is represented as a string, we have to remove k digits from the number so that the new number is the smallest possible. So if the input is like “1432219” and k = 3, then the result will be “1219”.To solve this, we will follow these steps −Define a stack st, create an empty string retn := size of numfor i in range 0 to n – 1while k is non zero and stack is not empty and top of stack > num[i]delete from the stack and decrease k by 1insert num[i] ...
Read MoreDraw a line in C++ graphics
In this tutorial, we will be discussing a program to draw a line in C++ graphics.To implement different shapes and sizes, animations, graphics.h library is used in C++.Example#include int main(){ int gd = DETECT, gm; initgraph(&gd, &gm, ""); line(150, 150, 450, 150); line(150, 200, 450, 200); line(150, 250, 450, 250); getch(); closegraph(); return 0; }Output
Read MoreDelete and free() in C++ Program
In this tutorial, we will be discussing a program to understand delete() and free() functions in C++.Both of these functions are primarily used for the same purpose i.e freeing up unused memory. The delete() operator is for the ones allocated using new() and free() for the ones allocated using malloc().Example#include #include int main(){ int x; int *ptr1 = &x; int *ptr2 = (int *)malloc(sizeof(int)); int *ptr3 = new int; int *ptr4 = NULL; //incorrect usage of delete delete ptr1; delete ptr2; //correct usage of delete delete ptr3; delete ptr4; getchar(); return 0; }
Read MoreData types ranges and their macros in C++
Given the task is to find the memory range of the different data types, that what range of value a data type can store the value from minimum value to maximum value. There is memory range of data type from in which value of data can be stored. It is difficult to remember the large range of value so C++ has macros for represent these numbers, from macros these large numbers can be directly assigned to variable without typing the whole Number range. Example 'char'(signed) is character data type and has a range of -128 to +128 and ...
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