
Typ string C++
Authored by Mariia Shvydka
Computers
Professional Development
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Celem poniższego (fragmentu) programu jest obliczyć liczbę liter a w słowie S:
int ile_a = 0;
for (int i = 0; i < S.length(); i++)
if (???)
ile_a++;
Co należy wstawić w miejsce znaków zapytania, aby program spełniał swoje założenia?
S == ’a’
S[i] = ’a’
i == ’a’
S[i] == ’a’
S == "a"
2.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Rozważmy fragment programu pokazany poniżej:
string generuj(int n) {
if (n == 0) return "a";
return string("b") + generuj(n - 1);
}
Jaki napis zwróci wywołanie generuj(3)?
bba
bbba
bbb
baaa
abbb
3.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Celem poniższego programu jest wypisać na wyjście kolejne litery alfabetu angielskiego (tzn. napis
abcdefghijklmnopqrstuvwxyz):
char znak = ’a’;
for (int i = 0; i < 26; i++)
cout << ???;
Co należy wstawić w miejsce znaków zapytania?
znak + i
'a'
znak + 'a'
znak + 'i'
znak
4.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Wczytanie słowa do zmiennej odbywa się dzięki:
sin<<
cin<<
writeln()
cout>>
5.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Wczytanie zdania do zmiennej odbywa się dzięki:
getline()
cin<<
writeln()
cout>>
6.
MULTIPLE SELECT QUESTION
30 sec • 2 pts
Linia kodu:
string PIN;
deklaruje zmienną PIN typu string
deklaruje typ PIN
deklaruje zmienną PIN
deklaruje ciąg znaków PIN
7.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Biblioteka odpowiadająca za obsługę ciagów znaków w C++ to
iostream
stdlib
ctime
string
vector
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