Online Access Free CPP Practice Test

What happens when you attempt to compile and run the following code?
#include <iostream>
#include <algorithm>
#include <vector>
using namespace std;
int main () {
int t[] = {1,2,3,4,5,1,2,3,4,5};
vector<int> v (t,t+10);
vector<int>::iterator it;
int m1[] = {1, 2, 3};
it = search (v.begin(), v.end(), m1, m1+3);
cout << "found at position: " << it?v.begin() << endl;
return 0;
}
Program outputs:

• A.found at position: 0
• B.found at position: 5
• C.found at position: 1
• D.found at position: 6
• E.found at position: 10

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;
}
int main() {
int t[] = { 10, 5, 9, 6, 2, 4, 7, 8, 3, 1 };
set<int> s1(t, t+10);
vector<int> v1(s1.rbegin(), s1.rend());
swap_ranges(s1.begin(), s1.end(), v1.begin());
for_each(v1.begin(), v1.end(), myfunction);
for_each(s1.begin(), s1.end(), myfunction);
return 0;
}
Program outputs:

• A.1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10
• B.10 9 8 7 6 5 4 3 2 1 10 9 8 7 6 5 4 3 2 1
• C.10 9 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 9 10
• D.compilation error
• E.1 2 3 4 5 6 7 8 9 10 10 9 8 7 6 5 4 3 2 1

What happens when you attempt to compile and run the following code?
#include <iostream>
#include <algorithm>
#include <vector>
using namespace std;
class A {
int a;
public:
A(int a) : a(a) {}
int getA() const { return a; } void setA(int a) { this?>a = a; }
bool operator==(A & b) { return a == b.a; }
};
struct Compare{
bool operator()(const A & a, const A & b) {return a.getA()==b.getA();};
};
int main () {
int t[] = {1,2,3,4,5,1,2,3,4,5};
vector<A> v (t,t+10);
vector<A>::iterator it;
A m1[] = {A(1), A(2), A(3)};
it = find_end (v.begin(), v.end(), m1, m1+3, Compare());
cout << "Found at position: " << it?v.begin() << endl;
return 0;
}

• A.program outputs: Found at position: 7
• B.program outputs: Found at position: 10
  ***/
• C.program outputs: Found at position: 5
• D.compilation error
• E.program outputs: Found at position: 0

What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
int main()
{
cout<<true<<" "<<boolalpha<<false;
return 0;
}
Program outputs:

• A.1 false
• B.1 0
• C.true false
• D.true 0
• E.compilation error

What will happen when you attempt to compile and run the code below, assuming you enter the following sequence: 1 2 3<enter>?
#include <iostream>
using namespace std;
int main ()
{
int a,b,c;
cin>>a>>b>>c;
cout<<a<<b<<c<<endl;
return 0;
}
Program will output:

• A.123
• B.compilation error
• C.the result is unspecified
• D.321
• E.1 2 3