This example demonstrate about How to get default phone number in android.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.     In the ... Read More

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 ... Read More

In a language such as Java, an exception such as java.lang.ArrayIndexOutOfBoundsException may occur if an array is accessed out of bounds. But there is no such functionality in C and undefined behaviour may occur if an array is accessed out of bounds.A program that demonstrates this in C is given ... Read More

The function strncpy() is used to copy the specified number of characters to the destination from the source.The following is the syntax of strncpy()char *strncpy( char *destination, char *source, size_t n);Here, destination is the pointer to the destination array where the source string is to be copied, source is the ... Read More

Use of the new operator signifies a request for the memory allocation on the heap. If the sufficient memory is available, it initializes the memory and returns its address to the pointer variable.The new operator should only be used if the data object should remain in memory until delete is ... Read More

The Sieve of Eratosthenes is one of the most efficient ways to find the prime numbers smaller than n when n is smaller than around 10 million.A program that demonstrates the Sieve of Eratosthenes is given as follows.Example#include using namespace std; void SieveOfEratosthenes(int num) {    bool pno[num+1];   ... Read More

Variables can be declared as constant using the const keyword or the #define preprocessor directive. Details about these are given as follows.The const keywordVariables can be declared as constants by using the “const” keyword before the datatype of the variable. The constant variables can be initialized once only. The default ... Read More

An object is an instance of a class. Memory is only allocated when an object is created and not when a class is defined.An object can be returned by a function using the return keyword. A program that demonstrates this is given as follows −Example Live Demo#include using namespace std; ... Read More

In this section, we will see how we can use the Zilog Z-80 Microprocessor to move a block of data to another location. There is one assumption, there is sufficient distance between source and destination. So blocks are non-overlapping. Basically the block movement is not exact moving, it is copying ... Read More

Interleaving is a tool that is used to enhance existing error correcting codes so that they can be used to perform burst error corrections as well.Most error correcting codes (ECCs) are designed to correct random errors, i.e. error caused by additive noise that is independent of each other. Burst error ... Read More