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FP 201 Programming

FundamentalsCHAPTER 1 : INTRODUCTION TO

C++ PROGRAMMING

1.1 Introducing the C++ PrograingEn!ironent

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1.1.1 Hi"tor# o$ C++1%&'Denni" Ritchie de!e(o)ed the *a"i" o$ C

eature" : arra#" and )ointer", ca)a*(e o$)orta*i(it#.

1%-

/0arne trou"tru) 2 /e(( 3a*" 4 *egande!e(o)ent o$ C++

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1.1.1 Hi"tor# o$ C++ 2cont.41%-5In Octo*er, 6r"t coercia( re(ea"e o$ C++

a))eared 7ith the (aunch o$ 8The C++Prograing 3anguage9 *# /0arne trou"tru).

1%-5+C++ (anguage re6ned unti( *ecae a (anguage

7ith o7n )er"ona(it#

C++ (i!ed a great e)an"ion in it" u"e" andtoda# i" "ti(( the )re$erred (anguage to de!e(o))ro$e""iona( a))(ication" on a(( )(at$or.

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1"t

A""ignent;hat are the di

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1.1.> C++ Progra tructure

preprocessor directives

main function heading?

declarations

executable statements

@

inc(ude

Bio"treaint ain2 4

?

"tateent2"4

@

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1.1.' C++ Prograing

De!e(o)ent Proce""1. Identi$# the )ro*(e

>. Ana(#Fe the )rogra

'. Ana(#Fe the data

. Decide IO $or the entire )rogra

5. Choo"e "uita*(e a(gorithic a))roach

. Tran"(ation o$ the a(gorith Coding

&. Co)i(e and (ining

-. Te"t the )rogra

%. JDe*ug i$ nece""ar#

2 7hen )rogra doe" not generate de"ired re"u(t" 4

C(ic on the STARto!ie7

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1.1. Integrated De!e(o)ent

En!ironent 2IDE4De6nition : A "o$t7are a))(ication that )ro!ide"

co)rehen"i!e $aci(itie" to co)uter )rograer"$or "o$t7are de!e(o)ent.

An IDE con"i"t" o$ :ource editor

Co)i(er and or Inter)reter

/ui(d autoation too("

De*ugger

Ea)(e" o$ IDE : Ec(i)"e, Micro"o$t Ki"ua( tudio,

;inDe!, LCode, /(ood"hed De! C++.

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FP 201 ProgrammingFundamentals

CHAPTER 1 : INTRODUCTION TO

C++ PROGRAMMING

1.> Identi$#ing the Co)i(ing De*uggingProce"", Error" in Prograing

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1.>.1 Co)i(ing Proce""CompilerTran"(ate the 7ho(e )rogra at one tie.

Tran"(ate" the "ource code, $or ea)(e C(anguage to achine (anguage.

# include

main( )

{

int x, y, z, sum;

double avg;

cout > x >>y>>z;

sum ! x y z;

avg ! sum 3;

cout

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1.>.> Error" in

Prograing Compile-time errorsOccur" 7hen the ru(e" o$ )rograing

(anguage are not a))(ied

Correction i" done during the )rogra coding

The *ug can *e traced during the co)i(ation

A("o no7n a" syntax error

Mu"t *e corrected *e$ore eecuting and te"tingthe )rogra

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1.>.> Error" in Prograing 2cont.4 Run-time errorsCannot *e traced *# co)i(er

Occur 7hi(e )rogra run", 7hen the )rograatte)t" an o)eration that i" i)o""i*(e tocarr# out.

A("o no7n a" logic error

Ea)(e di!i"ion *# Fero

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1.>.> Error" in Prograing 2cont.4Logical errors An error cau"ed *# $o((o7ing an incorrect

algoritm

Ker# dicu(t to detect it doe" not cau"e runtie error and doe" not di")(a# e""ageerror"

The on(# "ign o$ (ogic error incorrect )rogra

out)ut

Can *e detected *# te"ting the )rograthorough(#, co)aring it" out)ut to ca(cu(atedre"u(t"

To )re!ent care$u((# de" checing the

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La! 1De*ugging)rogra"7ith co)i(etie, runtie and

(ogica( error".