Question 1

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<B> 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<B>(cout));cout<<endl;

return 0;

}

Program outputs:

Options :

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 2

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:

Options :

A : 0 0

B : 0 1

C : 1 0

D : 1 1

Answer: D

Question 3

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:

Options :

A : 0 0

B : 0 1

C : 1 0

D : 1 1

Answer: D

Question 4

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

#include <iostream>

#include <algorithm>

#include <vector>

#include <set>

using namespace std;

void myfunction(int i) { cout << " " << i;

}

struct sequence {

int val,inc;

sequence(int s, int i):val(s),inc(i){}

int operator()(){

int r = val; val += inc;

return r;

}

};

int main() {

vector<int> v1(10);fill(v1.begin(), v1.end(), sequence(1,1));

for_each(v1.begin(), v1.end(), myfunction);

return 0;

}

Program outputs:

Options :

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

B : 10

C : 0 0 0 0 0 0 0 0 0 0

D : compilation error

Answer: D

Question 5

What will be output of the program when you attempt to compile and run the following

code?

#include <iostream>

#include <map>

#include <vector>

#include <string>

using namespace std;

int main(){

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

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

multimap<int,string> m;for(int i=0; i<10; i++) {

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

}

m[0]="ten";

m.insert(pair<int,string>(1,"eleven"));

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

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

}

return 0;

}

Options :

A : zero one two three four five six seven eight nine

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

C : zero eleven two three four five six seven eight nine

D : ten eleven two three four five six seven eight nine

E : compilation error

Answer: A

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