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To access array elementsWe can access array elements by using pointers.In CExample Live Demo#include int main() { int a[] = { 60, 70, 20, 40 }; printf("%d", *(a + 1)); return 0; }Output70In C++Example Live Demo#include using namespace std; int main() { int a[] = { 60, 70, 20, 40 }; cout
You might come across a scenarios where you received a UI where the buttons are rounded, and you might wonder how to do that? So here we will see how to make corners of a button round.We will be seeing both the ways to make the button rounded, one using Storyboard and another programmatically.Let’s get started! First we will make the corners of button rounded using Storyboard.Step 1 − Open Xcode → New Projecr → Single View Application → Let’s name it “RoundedButton”Step 2 − Open Main.storyboard and add a button as show belowStep 3 − Now select the button ... Read More
The HTML DOM input month required property returns and modify whether the input month field must be filled out before submitting the form.SyntaxFollowing is the syntax −1. Returning requiredobject.required2. Modifying requiredobject.required = true | falseExampleLet us see an example of HTML DOM input month required property − Live Demo html{ height:100%; } body{ text-align:center; color:#fff; background: linear-gradient(62deg, #FBAB7E 0%, #F7CE68 100%) center/cover no-repeat; height:100%; } p{ font-weight:700; font-size:1.1rem; ... Read More
Here we will see how we can get the gcd of more than two numbers. Finding gcd of two numbers are easy. When we want to find gcd of more than two numbers, we have to follow the associativity rule of gcd. For example, if we want to find gcd of {w, x, y, z}, then it will be {gcd(w, x), y, z}, then {gcd(gcd(w, x), y), z}, and finally {gcd(gcd(gcd(w, x), y), z)}. Using array it can be done very easily.Algorithmgcd(a, b)begin if a is 0, then return b end if return gcd(b ... Read More
In C++11, we can get the random library to generate random numbers. Here we have used random_device once to seed the random number generator object called mt. This random_device is slower than the mt19937, but we do not need to seed it. It requests for random data to the operating system.Example #include #include using namespace std; int main() { random_device rd; mt19937 mt(rd()); uniform_real_distribution dist(20.0, 22.0); //range is 20 to 22 for (int i=0; i> dist(mt) >> endl; }Output21.5311 21.7195 21.0961 21.9679 21.197 21.2989 20.6333 20.441 20.7124 20.2654 21.1877 20.4824 20.0575 20.9432 21.222 21.162 21.1029 20.2253 21.5669 20.3357
The following is an example to pre-select JComboBox item by index in Java. Here, we have selected the 3rd item by default i.e. whenever the Swing program will run, the third item would be visible instead of the 1st.Exampleimport java.awt.BorderLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JButton; import javax.swing.JComboBox; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JTextArea; public class SwingDemo { public static void main(String[] args) { JPanel panel = new JPanel(new BorderLayout()); String[] strArr = new String[] { "Laptop", "Mobile", "Desktop", "Tablet" }; JComboBox comboBox = new JComboBox(strArr); panel.add(comboBox, ... Read More
This example demonstrate about How to close a Android notification after the user is clicking on itStep 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. Step 3 − Add the following code to src/MainActivity.javapackage app.tutorialspoint.com.notifyme ; import android.app.NotificationChannel ; import android.app.NotificationManager ; import android.app.PendingIntent ; import android.content.Context ; import android.content.Intent ; import android.support.v4.app.NotificationCompat ; import android.support.v7.app.AppCompatActivity ; import android.os.Bundle ; import android.view.View ; import android.widget.Button ; public class MainActivity extends AppCompatActivity { ... Read More
To create a top-bottom split pane, let us create two components and split them −JComponent one = new JLabel("Top Split"); one.setBorder(BorderFactory.createLineBorder(Color.MAGENTA)); JComponent two = new JLabel("Bottom Split"); two.setBorder(BorderFactory.createLineBorder(Color.ORANGE));Now, we will split them. The two components will be split one on top of the other using VERTICAL_PANE constant −JSplitPane splitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT, one, two);The following is an example to create a top-bottom split pane in Java −Examplepackage my; import java.awt.Color; import javax.swing.BorderFactory; import javax.swing.JComponent; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JSplitPane; public class SwingDemo { public static void main(String[] a) { JFrame frame = new JFrame("SplitPane Demo"); ... Read More
No, name is not a reserved word in MySQL, you can use without backtick symbol. If you are working on a reserved word then use backtick symbol. Let us first create a table −mysql> create table name ( name varchar(10) ); Query OK, 0 rows affected (0.78 sec)Now you can insert some records in the table using insert command −mysql> insert into name values('John'); Query OK, 1 row affected (0.13 sec) mysql> insert into name values('Carol'); Query OK, 1 row affected (0.14 sec)Display all records from the table using select statement −mysql> select *from name;Output+-------+ | name ... Read More
There are two methods to modify properties of nested objects. One is Dot method and the other is Bracket method. The functionality is same for both the methods, but the only difference is their notation. lets' discuss them in detail.Dot methodExampleIn the following example initially the value of property country is England. But using Dot notation the value is changed to India.Live Demo var person; var txt = ''; person = { "name":"Ram", "age":27, "address": { "houseno":123, "streetname":"Baker street", ... Read More