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Articles by Sravani S
51 articles
What is the use of the \'&\' symbol in C++?
The & symbol is used as an operator in C++. It is used in 2 different places, one as a bitwise and operator and one as a pointer address of operator.Bitwise ANDThe bitwise AND operator (&) compares each bit of the first operand to that bit of the second operand. If both bits are 1, the bit is set to 1. Otherwise, the bit is set to 0. Both operands to the bitwise AND operator must be of integral types. Example #include using namespace std; int main() { unsigned short a = 0x5555; // pattern 0101 ... unsigned short b = 0xAAAA; // pattern 1010 ... cout
Read MoreSet the width of the element in HTML
Use the width attribute in HTML to set the width of an element. You can use the attribute with the following elements − , , , , , etc.ExampleYou can try to run the following code to implement width attribute in HTML − Live Demo Your browser does not support the video element. Output
Read MoreHow to display JavaScript variables in an HTML page without document.write?
Use Element.innerHTML in JavaScript to display JavaScript variables in an HTML page without document.write.You can try to work through the following code snippet −var $myName = document.querySelector('.name'); var $jsValue = document.querySelector('.jsValue'); $myName.addEventListener('input', function(event){ $jsValue.innerHTML = $myName.value; }, false);
Read MoreHow to define global variable in a JavaScript function?
To declare a global variable, use the var at global scope − var myGlobalVariable; function display() { // } For JavaScript function, assign the property to a window − function display() { window. myGlobalVariable = …; }
Read MoreHow to set the shadow effect of a text with JavaScript?
To set the shadow effect, use the textShadow property in JavaScript.ExampleYou can try to run the following code to return the shadow effect of a text with JavaScript − Set Text Shadow This is Demo Text! This is Demo Text! This is This is Demo Text! This is Demo Text! This is Demo Text! This is Demo Text! This is Demo Text! This is Demo Text! This is Demo Text! This is Demo Text! This is Demo Text! function display() { document.getElementById("myID").style.textShadow = "2px 2px 2px #ff0000,20px 5px 2px #F1F1F1"; }
Read MoreHow to get the value of the usemap attribute of an image with JavaScript?
To get the value of the usemap attribute of an image, use the useMap property. You can try to run the following code to display the usemap attribute value −Example var x = document.getElementById("myid").useMap; document.write("Usemap: "+x);
Read MoreHow to force a number to display in exponential notation?
Use the toExponential() method to force a number to display in exponential notation, even if the number is in the range in which JavaScript normally uses standard notation.The following is the parameter −fractionDigits - An integer specifying the number of digits after the decimal point. Defaults to as many digits as necessary to specify the number.ExampleYou can try to run the following code to force a number to display in exponential function − Javascript Method toExponential() var num=77.1234; var ...
Read MoreHow to access document properties using W3C DOM method?
This IE4 document object model (DOM) introduced in Version 4 of Microsoft's Internet Explorer browser. IE 5 and later versions include support for most basic W3C DOM features.ExampleTo access document properties using W3C DOM method, you can try to run the following code − Document Title This is main title Click the following to see the result:
Read MoreHow can we fetch alternate even-numbered records from MySQL table?
To understand this concept we are using the data from table ‘Information’ as follows −mysql> Select * from Information; +----+---------+ | id | Name | +----+---------+ | 1 | Gaurav | | 2 | Ram | | 3 | Rahul | | 4 | Aarav | | 5 | Aryan | | 6 | Krishan | +----+---------+ 6 rows in set (0.00 sec)Now, the query below will fetch the alternate even-numbered records from the above table ‘Information’ −mysql> Select id,Name from information group by id having mod(id,2) = 0; +----+---------+ | id | Name | +----+---------+ | 2 | Ram | | 4 | Aarav | | 6 | Krishan | +----+---------+ 3 rows in set (0.00 sec)
Read MoreHow can we use MySQL SELECT without FROM clause?
FROM clause after SELECT shows the references to a table. But if there is no reference to any table then we can use SELECT without the FROM clause. In other words, we can say that SELECT can be used to retrieve rows computed without reference to any table. Consider the following statements −mysql> Select concat_ws(" ","Hello", "World"); +---------------------------------+ | concat_ws(" ","Hello", "World") | +---------------------------------+ | Hello World | +---------------------------------+ 1 row in set (0.00 sec) mysql> Set @var1=100; Query OK, 0 rows affected (0.00 sec) mysql> Select @var1; +-------+ | @var1 | +-------+ | 100 | +-------+ 1 row in set (0.00 sec)
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