Layered System Structure
In the layered system structure, operating system is organized as hierarchy of layers; each of the layers is constructed upon one another. The lowest layer (layer 0) contains hardware and the topRead More…
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Break, Continue and Exit
Break: A break statement can be used to terminate or to come out from the loop or conditional statement unconditionally. It can be used in switch statement to break and come outRead More…
Exit Control Loop
An Exit Control Loop checks the condition for exit and if given condition for exit evaluate to true, control will exit from the loop body else control will enter again into theRead More…
Entry Control Loop
An entry control loop checks the condition at the time of entry and if condition or expression becomes true then control transfers into the body of the loop. Such type of loopRead More…
Looping Structures
C-programming language provides one of the most powerful features known as looping structure When we want to execute some statements repeatedly based on some specific condition looping structure can be helpful. LoopingRead More…
Goto Statement
C-language provides goto statement to transfer control unconditionally to other part of the program. Although use of goto statement is not advisable but sometime it is desirable to use go to statement.Read More…
Numeric Function
ABS () It returns absolute value of the given values. Syntax: ABS (Val); Example: SELECT abs (-15) FROM DUAL ; Output: 15 Power () It returns power of Mn where m isRead More…
Date Function
Add_Month: It returns date after adding specifies number of months in to the given dates. Syntax: Add_Month (date, month); Example: SELECT add_Month (sysdate, 3) FROM DUAL ; Output: 15-Aug-2016 ; Last_Day: ItRead More…
Conversion Function
Conversion function are used to convert one data type value into another data type. to_number(): It converts character value in to the numeric data type. Syntax: to_number (char); Example: SELECT to_number (substrRead More…
Distributed System
A distributed computer system consists of several computer systems connected through a network for the communication and resource sharing purpose. A distributed system is a system consisting of two or more nodes,Read More…