Practice CPP-22-02 Exam Online

Question 1

What happens when you attempt to compile and run the following code?

#include <deque>

#include <iostream>#include <algorithm>

#include <functional>

using namespace std;

class B { int val;

public:

B(int v):val(v){}

int getV() const {return val;} bool operator > (const B & v) const { return val>v.val;} };

ostream & operator <<(ostream & out, const B & v) { out<<v.getV(); return out;}

template<class T>struct Out {

ostream & out; Out(ostream & o): out(o){}

void operator() (const T & val ) { out<<val<<" "; } };

int main() {

int t[]={20, 30, 10, 20, 30, 10, 20, 30, 10, 20};

deque d1(t, t+10);

sort(d1.begin(), d1.end(), greater());

pair<deque ::iterator, deque::iterator > result = equal_range(d1.begin(), d1.end(),

B(20), greater());

for_each(result.first, result.second, Out(cout));cout<<endl;

return 0;

}

Program outputs:

A : 30 30 30 20 20 20 20 10 10 10

B : 20 20 20 20

C : 30 20 20 20 10

D : 20 20 20 20 10

E : 30 20 20 20 20 10

Answer: B

Question 2

What happens when you attempt to compile and run the following code?

#include <vector>

#include <iostream>

#include <algorithm>

using namespace std;

template<typename T>class B { T val;

public:

B(T v):val(v){}

T getV() const {return val;} bool operator < (const B & v) const { return val<v.val;} };

template<class T>ostream & operator <<(ostream & out, const B<T> & v) { out<<v.getV();

return out;}

template<class T>struct Out {

ostream & out;

Out(ostream & o): out(o){}void operator() (const T & val ) { out<<val<<" "; } };

bool Less(const B<float> &a, const B<float> &b) { return int(a.getV())<int(b.getV());}

int main() {

float t[]={2.28, 1.66, 1.32, 3.94, 3.64, 2.3, 2.98, 1.96, 2.62, 1.13};

vector<B<float> > v1; v1.assign(t, t+10);

stable_sort(v1.begin(), v1.end(), Less);

for_each(v1.begin(), v1.end(), Out<B<float> >(cout));cout<<endl;

return 0;

}

Program outputs:

A : 1.66 1.32 1.96 1.13 2.28 2.3 2.98 2.62 3.94 3.64

B : 1.13 1.32 1.66 1.96 2.28 2.3 2.62 2.98 3.64 3.94

C : compilation error

D : 3.94 3.64 2.98 2.62 2.3 2.28 1.96 1.66 1.32 1.13

E : the exact output is impossible to determine

Answer: A

Question 3

What happens when you attempt to compile and run the following code?

#include <vector>

#include <iostream>

#include <algorithm>

using namespace std;

class B { int val;

public:B(int v):val(v){}

int getV() const {return val;} bool operator < (const B & v) const { return val<v.val;} };

ostream & operator <<(ostream & out, const B & v) { out<<v.getV(); return out;}

template<class T>struct Out {

ostream & out;

Out(ostream & o): out(o){}

void operator() (const T & val ) { out<<val<<" "; } };

int main() {

B t1[]={3,2,4,1,5};

B t2[]={6,10,8,7,9};

vector v1(10);

sort(t1, t1+5);

sort(t2, t2+5);

merge(t1,t1+5,t2,t2+5,v1.begin());

for_each(v1.begin(), v1.end(), Out(cout));cout<<endl;

return 0;

}

Program outputs:

A : 1 2 3 4 5 6 10 8 7 9

B : 3 2 4 1 5 6 7 8 9 10

C : 3 2 4 1 5 6 10 8 7 9

D : 1 2 3 4 5 6 7 8 9 10

E : compilation error

Answer: A

Question 4

What happens when you attempt to compile and run the following code?

#include <iostream>

using namespace std;

template<class A>

void f(A a)

{

cout<<1<<endl;

}

void f(int a)

{

cout<<2<<endl;

}

int main(){

int a = 1;

f<float>(a);

return 0;

}

A : program displays: 1

B : program displays: 2

C : compilation error

D : runtime exception

Answer: A

Question 5

What happens when you attempt to compile and run the following code?

#include <deque>

#include <iostream>

#include <algorithm>

#include <set>

using namespace std;

template<class T>struct Out {

ostream & out;

Out(ostream & o): out(o){}

void operator() (const T & val ) { out<<val<<" "; }

};

bool Compare(char a, char b) { return tolower(a) < tolower(b);}

int main() {

char s[]={"qwerty"};

char t1[]={"ert"};

char t2[]={"ERT"};

sort(s, s+6);

cout<<includes(s,s+6, t1,t1+3, Compare)<<" "<<includes(s,s+6, t2,t2+3, Compare)<<endl;

return 0;

}

Program outputs:

A : 0 0

B : 0 1

C : 1 0

D : 1 1

Answer: D

Name:	CPP - C++ Certified Professional Programmer
Exam Code:	CPP-22-02
Certification:	C++ Certified Professional Programmer
Vendor:	C++ Institute
Total Questions:	230
Last Updated:	Apr 25, 2024

C++ Institute CPP-22-02