Computer Science By Erica Ligons Compound Statement l

Computer Science By: Erica Ligons

Compound Statement l A compound statement- is a unit of code consisting of zero or more statement also known as a block

Model Of Statement Expression Statement Compound Statement Selection Statement Labeled Statement Iterative Statement Jump Statement

Purpose of the Compound Statement The compound statement allows it user to make groups of statements into a single chunk 2. Parts of Compound Statement 1. Opening Brace Closing Brace

Functions l Function- a subroutine l The “C” Program consist of many functions, however, only one of the functions can be called a main l The main has the ability to allocate special tasks l The purpose of the function is to be able to receive one or more pieces of data

Side Effects of Functions l Side effects- occurs when the is a change in the state of the program Aspects of a Side Effect 1. 2. 3. Accepting data from outside source Sending data to monitor or file Changing the value of a variable

Function Declaration l Function declaration- is done with a prototype declaration Purposes For Calling A Functions Name 1. 2. 3. When a function is declared When it is called When it is defined

Function Call l Function call- is used for the purpose of calling a function l Actual parameters-represent the values tat are to be sent to the called function

Parameter Passing Can pass parameter in two ways: l Pass by value a copy of the data is created and placed in a local variable in the called function l Pass by reference- sends the address of a viable to the called function

Function Definition l Function definition- contains the code for functions. It has two parts the header and function of the body. Function Header Parts 1. The return type 2. The function name 3. Compound statement l Function body- contains declarations and statements for the functions

Selection l If else- use for two-way selections l Switch Selection- does the same as if else

Loops There are three types of loops l While loop- checks the value of a testing expression, pretest l For loop- it is a counter-control loop, pretest l Do-while loop- event controlled loop, but it is a posttest loop

Expression Statement Compound Statement Selection Statement Labeled Statement Iterative Statement Jump Statement