Free C++ Institute CPP Practice Exam with Questions & Answers | Set: 2

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

#include <iostream>

#include <algorithm>

#include

using namespace std;

int main () {

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

vector v (t,t+15);

vector::iterator it = search_n(v.begin(), v.end(), 4, 2);

cout<< it?v.begin()<<endl;

return 0;

}

Program outputs:

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

#include <iostream>

using namespace std;

void g(int a)

{

cout<<a?1<<endl;

}

template

void g(A a)

{

cout<<a+1<<endl;

}

int main()

{

int a = 1;

g(a);

return 0;

}

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

#include <iostream>

using namespace std;

int main()

{

cout.setf(ios::hex, ios::basefield);

cout<<100<<" ";

cout.flags(ios::showbase);

cout<<100<<" ";

return 0;

}

Program outputs:

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

#include <iostream>

#include <algorithm>

#include

using namespace std;

void myfunction(pair i) {

cout << " " << i.first;

}

int main() {

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

map m;

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

m[i]=t[i];

}

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

return 0;

}

Program outputs:

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

#include <iostream>

using namespace std;

int main()

{

cout<<100<<" ";

cout.setf(ios::hex);

cout<<100<<" ";

return 0;

}

Program outputs:

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

#include

#include

#include <iostream>

#include <algorithm>

using namespace std;

templatestruct Out {

ostream & out;

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

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

struct Sequence {

int start;

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

int operator()() { return start++; } };

int main() {

vector v1(10);

generate_n(v1.begin(), 10, Sequence(1));

random_shuffle(v1.rbegin(), v1.rend());

sort(v1.begin(), v1.end(), great());

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

return 0;

}

Program outputs:

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

#include <iostream>

#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;

}

Which changes, introduced independently, will allow the code to compile and display “one” “eight” “nine” “ten”? Choose all that apply

#include <iostream>

#include

#include <string>

using namespace std;

class A {

int a;

public:

A(int a):a(a){}

int getA() const { return a;}

/* Insert Code Here 1 */

};

/* Insert Code Here 2 */

int main(){

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

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

map m;/* Replace Code Here 3 */

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

m.insert(pair(A(t[i]),s[i]));

}

m.erase(m.lower_bound(2),m.upper_bound(7));

map::iterator i=m.begin(); /* Replace Code Here 4 */

for( ;i!= m.end(); i++) {

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

}

cout<<endl;

return 0;

}

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

#include <iostream>

#include <algorithm>

#include

using namespace std;

int main () {

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

vector v (t,t+10);

vector::iterator it;

int m1[] = {1, 3, 2};

it = find_end (v.begin(), v.end(), m1, m1+3);

if (it != v.end())

cout << "Found at position: " << it?v.begin() << endl;

return 0;

}

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

#include

#include <iostream>

#include <algorithm>

#include <functional>

using namespace std;

templatestruct Out {

ostream & out;

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

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

struct Add : public binary_function {

int operator() (const int & a, const int & b) const {

return a+b;

}

};

int main() {

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

vector v1(t, t+10);

vector v2(10);

transform(v1.begin(), v1.end(), v2.begin(), bind1st(Add(), 1));

for_each(v2.rbegin(), v2.rend(), Out(cout));cout<<endl;

return 0;

}

Program outputs: