Demo C++ Institute CPP-22-02 Exam Questions

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Section: Practice Mode 4 Questions
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Question 1

What happens when you attempt to compile and run the following code? 
#include
#include
#include
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 < (const A & b) const { return a}; 
struct Compare { 
bool operator ()(A & a) { 
if (a.getA() < 5) return true; 
return false; 
} 
}; 
int main () { 
int t[] = {1,2,3,2,3,5,1,2,7,3,2,1,10, 4,4,5}; 
set d (t,t+15); 
int number = count_if(d.begin(), d.end(), Compare()); 
cout<< number<return 0; 
} 
Program outputs:

Correct Answer: E
Explanation:
Answer: E
Question 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 Add { 
int operator()(int & a, int & b) { 
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(), bind2nd(Add(),1)); 
for_each(v2.rbegin(), v2.rend(), Out(cout));cout<return 0;
}Program outputs: 

Correct Answer: E
Explanation:
Answer: E 
Question 3

What happens when you attempt to compile and run the following code? Choose all that
apply. 
#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() ; ) {
int i; 
f>>i; 
cout<}
f.close();
return 0;

} 

Correct Answer: A, B, C, E
Explanation:
Answer: A,B,C,E 
Question 4

What happens when you attempt to compile and run the following code? 
#include #include #include
using namespace std; int main () { int t[]
= { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 }; vector v1(t, t +
10); deque d1(v1.begin(), v1.end());deque
d2; d2 = d1; d2.insert(d1.rbegin(), 10); for(int i = 0;
i

Correct Answer: D
Explanation:
Answer: D 

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