Question 1

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

#include <iostream>

#include <string>

using namespace std;

template <class T>

class A {

T_v;

public:

A() {}

A(T v): _v(v){}

T getV() { return _v; }

void add(T & a) { _v+=a; }

};

int main()

{

A<string>a("Hello"); string s(" world!");

a.add(s);

cout << a.getV() <<endl;

return 0;

}

Options :

A : program will display: Hello world!

B : program will not compile

C : program will display: Hello

D : program will run without any output

Answer: A

Question 2

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

Options :

A : 10 10

B : 10.0 10.123

C : compilation error

D : 10 10.123

Answer: D

Question 3

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

#include <iostream>

#include <map>

#include <string>

using namespace std;

int main(){

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

string first[] = {"three", "four", "two", "one", "six","five", "seven", "nine","eight"," ten"};

multimap<int,string> m;

for(int i=0; i<10; i++) {

m.insert(pair<int,string>(second[i],first[i]));

}

if (m[11] == "eleven") {

cout<<"eleven ";

}

for(multimap<int, string>::iterator i=m.begin();i!= m.end(); i++) {

cout<<i?>second<<" ";

}cout<<m.size();

return 0;

}

Options :

A : program outputs: one two three four five six seven eight nine ten 11

B : program outputs: one two three four five six seven eight nine ten 10

C : program outputs: eleven one two three four five six seven eight nine ten 10

D : compilation error

Answer: A

Question 4

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

#include <iostream>

#include <set>

#include <list>

using namespace std;

int main(){

int t[] ={ 1, 1, 2, 2, 3, 3, 4, 4, 5, 5 };

list<int>v(t, t+10);

multiset<int> s1(v.begin(),v.end());

if (s1.count(3) == 2) {

s1.erase(3);

}

for(multiset<int>::iterator i=s1.begin();i!= s1.end(); i++) {

cout<<*i<<" ";

}

return 0;

}

Options :

A : program outputs: 1 2 3 4 5

B : program outputs: 1 2 4 5

C : program outputs: 1 1 2 2 3 4 4 5 5

D : program outputs: 1 1 2 2 3 3 4 4 5 5

E : compilation error

Answer: D

Question 5

What will happen when you attempt to compile and run the code below, assuming that you

enter the following sequence: 1 2 3 end?

Options :

A : 1 2 3

B : 1 2 3 end

C : 1

D : compilation error

E : program runs forever without output

Answer: A

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