Free C++ Institute CPP Exam Actual Questions

The questions for CPP were last updated On May 3, 2024

Question No. 1

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

#include

#include

#include

using namespace std;

int main(){

int t[] ={ 3, 4, 2, 1, 6, 5, 7, 9, 8, 0 };

vectorv(t, t+10);

multiset s1(v.begin(),v.end());

s1.insert(v.begin(),v.end());

pair::iterator,multiset::iterator> range;

range = s1.equal_range(6);

while (range.first != range.second) {

cout<<*range.first<<" "; range.first++;

}

return 0;

}

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Correct Answer: A

Question No. 2

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

#include

#include

#include

using namespace std;

templatestruct Out {

ostream & out;

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

void operator()(const T & val ) {

out<

}

};

struct Sequence {

int start;

Sequence(int start):start(start){}

int operator()() {

return start++ ; }};

int main() {

vector v1(10);

generate(v1.rbegin(), v1.rend(), Sequence(1));

rotate(v1.begin(),v1.begin() + 1, v1.end() );

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

return 0;

}

Program outputs:

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Correct Answer: C

Question No. 3

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

#include

#include

#include

#include

#include

#include

using namespace std;

class B { int val;

public:

B(int v=0):val(v){}

int getV() const {return val;}

operator int() const { return val; };};

templatestruct Out {

ostream & out;

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

void operator() (const T & val ) {out<

int main () {

int t[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};

fstream f("test.out", ios::trunc|ios::out);

list l(t, t+10);

for_each(l.begin(), l.end(), Out(f));

f.close();

f.open("test.out");

for( ; f.good() ; ) {

B i;

f>>i;

cout<

}

f.close();

return 0;

}

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Correct Answer: D

Question No. 4

What will happen when you attempt to compile and run the code below, assuming that you enter the following sequence: one two three?

#include

#include

using namespace std;

int main ()

{

string a;

cin>>a;

cout<

return 0;

}

Program will output:

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Correct Answer: A

Question No. 5

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

#include

#include

#include

#include

#include

using namespace std;

int main() {

int t[] = { 3, 4, 2, 1, 0, 3, 4, 1, 2, 0 };

vector v(t, t + 10);

multimap m;

for (vector::iterator i = v.begin(); i != v.end(); i++) {

stringstream s;s << *i << *i;

m.insert(pair(*i, s.str()));

}

pair::iterator, multimap::iterator> range;

range = m.equal_range(2);

for (multimap::iterator i = range.first; i != range.second; i++) {

cout << i?>first << " ";

}

return 0;

}

The output will be:

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Correct Answer: A