This is a C++ program to convert string to char array in C++. This can be done in multiple different waysType1AlgorithmBegin    Assign a string value to a char array variable m.    Define and string variable str    For i = 0 to sizeof(m)       Copy character ... Read More

Virtual functions in C++ used to create a list of base class pointers and call methods of any of the derived classes without even knowing kind of derived class object. Virtual functions are resolved late, at runtime.Here is an implementation of virtual function in C++ program −Example#include using namespace ... Read More

Let us first create a table. Following is the query −mysql> create table insertOneToAnotherTable    -> (    -> Value int    -> ); Query OK, 0 rows affected (0.60 sec)Following is the query to insert some records in the table using insert command −mysql> insert into insertOneToAnotherTable values(100); Query ... Read More

Freivalds' algorithm determines whether the matrices are equal for a chosen k value with a probability of failure less than 2^-k in O(kn^2).It is used to verify matrix multiplication.AlgorithmBegin    Take matrix1(n*n), matrix2(n*n), matrix3(n*n) as input.    // According to the algorithm we have to verify:    // matrix1 × ... Read More

This is a C++ program to represent Linear Equations in matrix form.AlgorithmBegin    1) Take the no of variables n and the coefficients of each variable as input.    2) Declare a matrix[n][n] and constant[n][1].    3) Make for loops i = 0 to n-1 and j = 0 to ... Read More

In C++ we can pass arguments into a function in different ways. These different ways are −Call by ValueCall by ReferenceCall by AddressSometimes the call by address is referred to as call by reference, but they are different in C++. Incall by address, we use pointer variables to send the ... Read More

Before getting into example, we should know what sqlite data base in android is. SQLite is an open source SQL database that stores data to a text file on a device. Android comes in with built in SQLite database implementation. SQLite supports all the relational database features. In order to ... Read More

This example demonstrate about How to use length () in Android textview.Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml.         ... Read More

To understand the query with an or condition, let us create a collection with the document. The query to create a collection with a document is as follows −> db.orConditionDemo.insertOne({"CustomerName":"Larry", "ShippingDate":new ISODate("2018-01-29")}); {    "acknowledged" : true,    "insertedId" : ObjectId("5c8ec5262f684a30fbdfd56a") } > db.orConditionDemo.insertOne({"CustomerName":"Mike", "ShippingDate":new ISODate("2019-04-13")}); {    "acknowledged" : ... Read More

This is a C++ program to implement Modular Exponentiation Algorithm.AlgorithmBegin    function modular():    // Arguments: base, exp, mod.    // Body of the function:       initialize res = 1       while (exp > 0)          if (exp mod 2 == 1)   ... Read More