To acknowledge student with the concept of control structures in programming: selection control structure and repetition control structure
PowerPoint Presentation
OBJECTIVESAt the end of the chapter, student will know:To
explain control structures conceptTo write a C++ program using
control structuresAIMTo acknowledge student with the concept of
control structures in programming: selection control structure and
repetition control structureCONTROL STRUCTUREUNIVERSITI TUN HUSSEIN
ONN MALAYSIA1CONTROL STRUCTURESequence Control StructureSelection
Control StructureRepetition Control Structure
Selection Control Structure3Used in programming to:
offer choice of interests to user of a system.restrict/limit to
only one operation/process in a system to be executed at a
timeallow user to choose only one selection of process/operation at
a time from a system.execute a process/operation based on
selection.
34Selection Control StructureBest example/case:
In general, the ATM processes are controlled by some
restrictions or rules which is written using selection control
structure (using particular programming language).The concept is
"one selection, one operation".
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Selection Control Structure56Selection Control StructureHow
decision is made when user make their selection from the ATM
menu?The system will check the input and compares the selection
with the conditions set in the system. If the input matches the
setting conditions, the corresponding menu will be displayed.
67Selection Control StructureChoose only one instruction to be
executed.Selection will be done if only the conditional statement
is TRUE.Types of selection control structure:
Single selection (if)Doubleselection (if-else)Multi level
selection (if-else-if)7Single selection (if)8Use if statement.Used
in a situation which if conditional statement is TRUE, statement
will be selected.
8grade ==A Print ExcellentYesNoi) Single SelectionConvert to
flowchart:UNIVERSITI TUN HUSSEIN ONN MALAYSIAcont9if (conditional
expression)C++ statement;ReservedwordConsist of:Output statement/
Input statement/ expressionSingle selection (if)
FORMAT10If grade is A, print a message ExcellentConvert to valid
selection statement:if ( grade = = A) cout
