VariablesIn C language, variables are the storage place where some form of data is stored. Different variables require different amount of memory on which a set of operations is applied.A variable name cannot start with a number. It can consist of alphabets, number, underscore “_”.Here is the syntax of declaring ... Read More

The realpath_cache_get() function returns realpath cache entries. It returns an array of realpath cache entries.Syntaxrealpath_cache_get()ParametersNAReturnThe realpath_cache_get() function returns an array of realpath cache entries.Example Live DemoOutputArray ( [/home] => Array ( [key] => 4353355791257440477 [is_dir] => 1 [realpath] => /home [expires] => 1538630044 ) [/home/cg/root] => Array ( [key] => ... Read More

The glob() function returns an array of filenames or directories matching a specified pattern. The glob() function returns.An array containing the matched files/directories, Returns an empty array if no file is matched, FALSE on error.Syntaxglob(pattern, flags)Parameterspattern − The pattern to search for.flags − The following are the flags:GLOB_MARK - Adds ... Read More

Global System for Mobile communication (GSM) architecture comprises of the following components −Mobile Station : The mobile station is the mobile phone, which comprises of the mobile handset and SIM card. The mobile handset comprises of the transceiver, the display and its processor. SIM stands for SubscriberIdentity Module. It is ... Read More

A string is a one dimensional character array that is terminated by a null character. The length of a string is the number of characters in the string before the null character.For example.char str[] = “The sky is blue”; Number of characters in the above string = 15A program to ... Read More

A structure is a collection of items of different data types. It is very useful in creating complex data structures with different data type records. A structure is defined with the struct keyword.An example of a structure is as follows.struct employee {    int empID;    char name[50];    float ... Read More

In a computer system, the octal number is expressed in the octal numeral system while the decimal number is in the decimal numeral system. The octal number is in base 8 while the decimal number is in base 10.Examples of decimal numbers and their corresponding octal numbers are as follows.Decimal ... Read More

A string is a one dimensional character array that is terminated by a null character. Concatenation of two strings is the joining of them to form a new string. For example.String 1: Mangoes are String 2: tasty Concatenation of 2 strings: Mangoes are tastyA program to concatenate two strings is ... Read More

A prime number is a whole number that is greater than one and the only factors of a prime number should be one and itself. Some of the first prime numbers are 2, 3, 5, 7, 11, 13 ,17 etc.There can be many prime numbers between two intervals. For example, ... Read More

An Armstrong Number is a number where the sum of the digits raised to the power of total number of digits is equal to the number.Some examples of Armstrong numbers are as follows −3 = 3^1 153 = 1^3 + 5^3 + 3^3 = 1 + 125 + 27 = ... Read More