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Exam Code: CPP-22-02
Exam Questions: 230
CPP - C++ Certified Professional Programmer
Updated: 24 Nov, 2025
Question 1

What happens when you attempt to compile and run the following code?
 #include <vector>
 #include <iostream>
 #include <algorithm>
 using namespace std;
 template<typename T>class B { T val;
 public:
 B(T v):val(v){}
 T getV() const {return val;} bool operator < (const B & v) const { return val<v.val;} };
 template<class T>ostream & operator <<(ostream & out, const B<T> & 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<<" "; } };
 bool Less(const B<float> &a, const B<float> &b) { return int(a.getV())<int(b.getV());}
 int main() {
 float t[]={2.28, 1.66, 1.32, 3.94, 3.64, 2.3, 2.98, 1.96, 2.62, 1.13};
 vector<B<float> > v1; v1.assign(t, t+10);
 stable_sort(v1.begin(), v1.end(), Less);
 for_each(v1.begin(), v1.end(), Out<B<float> >(cout));cout<<endl;
 return 0;
 }
Program outputs:

Options :
Answer: A
Question 2

What happens when you attempt to compile and run the following code?
 #include <iostream>
 using namespace std;
 template<class A>
 void f(A a)
 {
 cout<<1<<endl;
 }
 void f(int a)
 {
 cout<<2<<endl;
 }
 int main(){
 int a = 1;
 f<float>(a);
 return 0;
 }

Options :
Answer: A
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 :
Answer: D
Question 4

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 :
Answer: D
Question 5

What happens when you attempt to compile and run the following code?
#include <iostream>
 #include <map>
 #include <vector>
 #include <sstream>
 #include <string>
 using namespace std;
 int main(){
 int t[] ={ 3, 4, 2, 1, 0, 1, 2, 3, 4, 0 };
 vector<int> v(t, t+10);
 multimap<int,string> m;
 for(vector<int>::iterator i=v.begin(); i!=v.end(); i++) {
 stringstream s; s<<*i<<*i; m.insert(pair<int,string>(*i,s.str()));
 }
 for(multimap<int, string>::iterator i=m.begin();i!= m.end(); i++) {
 cout<<*i<<" ";
 }
 return 0;
 } 

Options :
Answer: A
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