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Statements
Presented by:
Mark Kevin Camero
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Statements
Statements fall into three general types:
AssignmentInput / OutputControl
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oControl Statements
ontrol and modify the flo! of program e"eution#
I$
S%OP
&O%Os
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Compound statement
group of statements treated as one#
Seletion Statements
provides the means of hoosing bet!een t!o or
more e"eution paths in a program#
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%!o'(ay Seletors
If )e"pression* statement
+lse statement
single'!ay seletors
$O,%,A- I$
A.&O.0 I$'%1+-'+.S+
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Multiple Seletion Construts
Selet one of any number of statements orstatement of groups#
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Iterative Statements
It is defined to be a onstrut that inludes an iterativestatement
and a olletion of statements !hosee"eution is ontrolled solely by
the iterativestatement#
bodypretest
posttest
Iteration onstrut$ormed if the iteration statement and the
assoiated loop body
are in syn#
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Counter'Controlled .oop ,epeating a set of program statements
for a finite
number of times are sometimes alled ounting
loop#.ogially'Controlled .oops
these types of loops are based on e"pression ore"pressions
evaluated to be either true or false or simply a2oolean
e"pression#
pretest loops!hile )e"pression*Statement
posttest loopsdo
Statement
!hile )e"pression*
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!hile ) 3 40* 5 6 47
or
!hile ) 3 40* 8
5 6 47
97
!hile )4* printf),unning;n
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=nonditional 2ranhing also alled a >ump or a start?
transfers
e"eution ontrol to a speified plae in theprogram#
.abel $orms are formed or are !ritten atually ontributesto the
readability of several programminglanguages#
Sope of .abels is the same as that of the variables that
aredelared !here the label are delared#
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+"eption handling is the speial proessing that may be
re@uired!hen an e"eption is deteted and done by aode unit #
ounter'overflo! or underflo!
invalid memory referenes
unkno!n instrutions
+"eption handling an be done into severalgeneral tehni@ues:
,eturn of status values.abel parameter passing
Separate independent subprogram
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Standard funtions that return error value:
read returns the number of values read
or '4fopen returns a valid file handle or -=..#
