Forritunarverkefni 2 -- Tolvunarfraedi2-04

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Subject: Forritunarverkefni 2

Author:
Ymir

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Date Posted: 00:00:33 03/17/04 Wed

Mig langa�i a� benda f�lki � a� � sta� �ess ey�a p��ri � a� b�a til ofsafenginn k��a til a� a�skilja or� (sbr. C a�fer�ir � bor� vi� strtok(), e�a strchr() �samt isspace()) er til afar einf�ld lei� til a� lesa inn strengi me� string klasanum � C++:

string s;
cin >> s;

mun lesa inn n�sta or� �r in-straumnum � s. Ef t.d. inntak er "Or� bla hall�!" � eftirfarandi forritsb�t:

string s;
cin >> s; cout << "'" << s << "', ";
cin >> s; cout << "'" << s << "', ";
cin >> s; cout << "'" << s << "'.";

mun prentast �t 'Or�', 'bla', 'hall�!'. A� sj�lfs�g�u m� nota a�ra strauma � �essum tilgangi, t.a.m. v�ri hentugt a� nota:

string s;
ifstream inp("bok.txt");
while (inp >> s)
{
cout << "Las or�i� '" << s << "'!\n";
}

sem mun h�tta �egar �ll or� �r skr�nni 'bok.txt' hafa veri� lesin.

Auk �ess hafa borist spurningar um hvernig bera megi saman tvo strengi til a� ra�a �eim � r��. String klasinn b��ur einfaldlega upp � a�ger�irnar '<', '>', og '==' fyrir samanbur�. D�mi:

string s1 = "Lambakaka", s2 = "Lambabaka";
if (s1 > s2) cout << "Whee!" << endl;

mun skila "Whee!" �ar sem fyrri strengurinn er aftar en hinn seinni � stafr�finu m.t.t. ASCI-gilda.

Vona a� �etta n�tist einhverjum!

Kve�ja,
�mir

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