Article Categories
- All Categories
-
Data Structure
-
Networking
-
RDBMS
-
Operating System
-
Java
-
MS Excel
-
iOS
-
HTML
-
CSS
-
Android
-
Python
-
C Programming
-
C++
-
C#
-
MongoDB
-
MySQL
-
Javascript
-
PHP
Articles on Trending Technologies
Technical articles with clear explanations and examples
strcat() vs strncat() in C++
Both strcat() and strncat() are predefined string functions in C++. Details about these are given as follows.strcat()This function is used for concatenation. It appends a copy of the source string at the end of the destination string and returns a pointer to the destination string. The syntax of strcat() is given as follows.char *strcat(char *dest, const char *src)A program that demonstrates strcat() is given as follows.Example#include #include using namespace std; int main() { char str1[20] = "Mangoes are "; char str2[20] = "yellow"; strcat(str1, str2); cout
Read MoreParsing and Formatting a Byte Array into Binary in Java
Set a BigInteger object.BigInteger one;Now, create a ByteArray.byte byteArr[] = new byte[] { 0x1, 0x00, 0x00 }; one = new BigInteger(byteArr);For Binary, we have used 2 as the toString() method parameter.String strResult = one.toString(2);The following is an example −Exampleimport java.math.*; public class Demo { public static void main(String[] args) { // BigInteger object BigInteger one; byte byteArr[] = new byte[] { 0x1, 0x00, 0x00 }; one = new BigInteger(byteArr); String strResult = one.toString(2); System.out.println("ByteArray to Binary = "+strResult); } }OutputByteArray to Binary = 10000000000000000
Read MoreDeclare static variables and methods in an abstract class in Java
If a method is declared as static, it is a member of a class rather than belonging to the object of the class. It can be called without creating an object of the class. A static method also has the power to access static data members of the class.A static variable is a class variable. A single copy of the static variable is created for all instances of the class. It can be directly accessed in a static method.An abstract class in Java is a class that cannot be instantiated. It is mostly used as the base for subclasses to ...
Read MoreCalculate minutes between two dates in C#
Firstly, set the two dates.DateTime date1 = new DateTime(2018, 7, 15, 08, 15, 20); DateTime date2 = new DateTime(2018, 8, 17, 11, 14, 25);Now, calculate the difference between two dates.TimeSpan ts = date2 - date1;To calculate minutes.ts.TotalMinutesLet us see the complete code.Exampleusing System; using System.Linq; public class Demo { public static void Main() { DateTime date1 = new DateTime(2018, 7, 15, 08, 15, 20); DateTime date2 = new DateTime(2018, 8, 17, 11, 14, 25); TimeSpan ts = date2 - date1; Console.WriteLine("No. of Minutes (Difference) = {0}", ts.TotalMinutes); } }OutputNo. of Minutes (Difference) = 47699.0833333333
Read MoreHow to pass a 2D array as a parameter in C?
A 2-D array can be easily passed as a parameter to a function in C. A program that demonstrates this when both the array dimensions are specified globally is given as follows.Example#include const int R = 4; const int C = 3; void func(int a[R][C]) { int i, j; for (i = 0; i < R; i++) for (j = 0; j < C; j++) a[i][j] += 5; ; } int main() { int a[R][C]; int i, j; for (i = 0; i < R; i++) for (j = 0; j ...
Read MoreSchedule a task for repeated fixed delay execution in Java
In fixed-delay execution, each execution is scheduled with respect to the original execution time of the preceding execution. If an execution is delayed for a particular reason (case in point, garbage collection), the subsequent executions will be delayed as well.There are two ways in which a task can be scheduled for repeated fixed-delay execution. They are as follows −Scheduling a task for repeated fixed-delay execution at a specified timeScheduling a task for repeated fixed-delay execution after a specified delayScheduling a task for repeated fixed-delay execution at a specified timeThe void schedule(TimerTask task, Date firstTime, long period) method schedules tasks for ...
Read MoreC# Console.WindowLeft Property
The WindowsLeft property gets or sets the leftmost position of the console window area relative to the screen buffer.Declare an integer variable to get the leftmost position.int left;Now, use the Console.WindowLeft property.left = Console.WindowLeftLet us see the complete example.Exampleusing System; class Demo { static void Main() { int left; left = Console.WindowLeft; Console.WriteLine("Left position of the Console window = "+left); } }OutputNote: The output may vary accordingly based on the position of the Console WindowLeft position of the Console window = 0
Read MoreException Propagation in C#
Exception Propogation can be understood by how exception handling works in C#.In try, when an exception occurs the corresponding catch blocks are checked. This is done to see if they can catch the exception. If no matching exception is found, the exception is propagated to a higher-level try block. This repeats until the exception is caught. In case, the exception isn’t caught, the execution of the program comes to an end.The above concept is explain in the below example showing nested try statements.Exampleusing System; using System.Text; public class Demo { public static void Main() { try ...
Read MoreHow to throw a C++ exception?
Exception handling is used to handle the exceptions. We can use try catch block to protect the code. Exception can be thrown anywhere within the code block. The keyword “throw” is used to throw an exception.Here is an example of throw in C++ language,Example#include using namespace std; int display(int x, int y) { if( y == 0 ) { throw "Division by zero condition!"; } return (x/y); } int main () { int a = 50; int b = 0; int c = 0; try { c = display(a, b); cout
Read MoreHow to return local array from a C++ function?
A local array cannot be directly returned from a C++ function as it may not exist in memory after the function call. A way to resolve this is to use a static array in the function. As the lifetime of the static array is the whole program, it can easily be returned from a C++ function without the above problem.A program that demonstrates this is given as follows.Example#include using namespace std; int *retArray() { static int arr[10]; for(int i = 0; i
Read More