A
dastur xatolar tufayli ishga tushmaydi
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B
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0 dan 8 gacha sonlarni
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C
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1 dan 9 gacha sonlarni
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D
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0 dan 9 gacha sonlarni
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242
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«test.dat» nomli fayl yaratilgan va unda «hello world» so’zi yozilgan. Faylning tarkibi dastur ishga tushgandan keyin qanday bo’ladi:
ofstream outfile("c:\\test.dat");
if (!outfile)
{ cout << "error open file";
return 1; }
outfile << "!!!" << endl;
outfile.close();
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2
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11
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LO6
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A
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!!!
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B
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hello world!!!
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C
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hello world
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D
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world!!!
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243
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Ushbu kod kompilyatsiya xatosini keltirib chiqaradimi?
class rectangle
{
public:
int a,b;
int sum();
int square();
~rect();
};
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2
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13
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LO5
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A
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ha, destructor nomi sinf nomi bilan mos kelishi kerak
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B
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ha, destructor nomi kichik harf bilan boshlanmasligi kerak
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C
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yo’q kod to’g’ri yozilgan
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D
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ha, destructor nomi ~ belgisi bilan boshlanmasligi kerak
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244
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Belgini yangi qatordan boshlash uchun
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2
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6
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LO4
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A
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maxsus endl manipulyatoridan foydalaning
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B
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belgilar satrini chiqarganda, ular avtomatik ravishda keyingi qatorga o’tadi
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C
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nuqta-vergul bilan operatorni tugatish
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D
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nuqta bilan operatorni tugatish
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245
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|
Ushbu kod kompilyatsiya xatosini keltirib chiqaradimi?
class a {
public:
int y;
int inc(int x) { return ++y; };
int inc(short x) { return x + y; };
};
a obj; int y = 5; obj.y = 6;
cout << obj.inc(y);
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2
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13
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LO5
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A
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7
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B
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6
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C
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11
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D
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Kompilyatsiyada xatolik
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246
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|
Qaysi holatda sinfning ta'rifi to'g'ri?
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2
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13
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LO5
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|
A
|
class a
{
public:
int x;
int summ(int a){return x+a;}
};
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B
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class my_cl
{
public:
int f;
int summ(int a){return x+a;}
};
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C
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class b
{
public:
int f;
void ch_f(int x)
{
f=x;
return f;
}
};
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D
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class b
{
public:
int f;
void ch_f(int x)
{
return x;
}
};
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247
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|
Quyidagi keltirilgan misolda hamma kalit so’zlarni belgilang?
int calc(int a, int b, bool f)
{
if (f==1)
return a+b;
else
return a*b;
}
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2
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13
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LO3
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A
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int,bool,if,else,return
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B
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int,calc,bool,return,if,else
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C
|
int,if,else,return
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D
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int,if,else,return,calc,a,b,f,bool
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|
248
|
|
Quyidagi ifodani hisoblash orqali qanday natija olamiz:
int d=5; bool b = true, c; c = (!b||(d>3));
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2
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6
|
LO1
|
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A
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true
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B
|
false
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C
|
Kompilyatsiyada xatolik
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D
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5
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249
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Ushbu kodni bajarish natijasida ekranga nima chiqadi?
int f1(int x1, int &x2) { return ++x1 + (++x2); }
int main()
{ int a = 7, k = 1;
k = f1(a, k);
cout << a << " " << k;
}
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2
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6
|
LO3
|
|
A
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7 10
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B
|
7 1
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C
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8 10
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D
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0 10
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250
|
|
Ushbu kodni bajarish natijasida ekranga nima chiqadi?
#include
short x = 4, i = 0;
void fun1()
{ double p=2;
if (!i) throw p; }
void fun2()
{ --x; fun1(); x++; }
int main()
{ try
{ fun2(); }
catch (double)
{ cout << "exception "; }
cout << x << " " << i;
}
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2
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6
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LO3
|
|
A
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exception 3 0
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B
|
Kompilyatsiyada xatolik
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C
|
exception
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D
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4 0
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251
|
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Dinamik xotira ajratish nima?
|
2
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6
|
LO4
|
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A
|
ob'ekt (o'zgaruvchi) uchun xotira darhol ajratilmaydi, lekin dastur jarayonida xotira qo'lda chiqariladi
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B
|
ob'ekt (o'zgaruvchi) uchun xotira darhol ajratilgan bo'lishi mumkin, va dastur jarayonida, xotirani ozod qilish avtomatik ravishda amalga oshiriladi
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