You can use the popen and pclose functions to pipe to and from processes. The popen() function opens a process by creating a pipe, forking, and invoking the shell. We can use a buffer to read the contents of stdout and keep appending it to a result string and return ... Read More

The increment (++) and decrement (--) operators area unit 2 necessary unary operators available in C++. Following example explain how increment (++) operator can be overloaded for prefix as well as postfix usage. Similar way, you can overload operator (--).Example#include using namespace std; class Time {    private: ... Read More

The conditional operator (? :) is a ternary operator (it takes three operands). The conditional operator works as follows −The first operand is implicitly converted to bool. It is evaluated and all side effects are completed before continuing.If the first operand evaluates to true (1), the second operand is evaluated.If ... Read More

The dot and arrow operator are both used in C++ to access the members of a class. They are just used in different scenarios. In C++, types declared as a class, struct, or union are considered "of class type". So the following refers to both of them.a.b is only used ... Read More

These relationships are mainly based on the usage. This determines whether a certain class HAS-A certain thing. This relationship helps to reduce duplication of code as well as bugs.Let's look into an example −Examplepublic class Vehicle{} public class Speed{} public class Van extends Vehicle {    private Speed sp; }This ... Read More

To align the text of a paragraph, use the text-indent property.ExamplePossible values are % or a number specifying indent space. You can try to run the following code to implement a text-index property with CSS:                            This text ... Read More

The font-weight property provides the functionality to specify how bold a font is. Possible values could be normal, bold, bolder, lighter, 100, 200, 300, 400, 500, 600, 700, 800, 900.                   This font is bold.       This font is bolder.       This font is 500 weight.    

In MySQL, UNIX timestamp format is the way to represent time value as an integer. The integer value represented for the date value would be the number of seconds. The starting date for counting these number of seconds is ‘1970-01-01’.mysql> SELECT UNIX_TIMESTAMP('2017-10-22 04:05:36')AS 'Total Number of Seconds'; +-------------------------+ | Total ... Read More

In the first example, you are just inheriting amitBaseClass prototype.function SomeClass() { } SomeClass.prototype = Object.create(amitBaseClass.prototype);In the second example, you are executing the constructor function. An instance of amitBaseClass is created and you are inheriting the who complete amitBaseClass object.function SomeClass () { } SomeClass.prototype = new amitBaseClass ();So, ... Read More

The “use strict” is a directive, which is a literal expression. It introduced in JavaScript 1.8.5. As the name suggests, “use strict” indicates that the code is to be executed in strict mode. Under non-strict, the code won’t execute won’t execute in strict mode.Let us declare strict mode. To declare, ... Read More