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Exam Code: CPP

Exam Name: C++ Certified Professional Programmer

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CPP Reliable Test Passing Score Total Q&A: 230 Questions and Answers

Last Update: 2017-03-16

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NO.1 What happens when you attempt to compile and run the following code?
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;
template<class T>struct Out {
ostream & out;
Out(ostream & o): out(o){}
void operator() (const T & val ) { out<<val<<" "; } };
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<int> v1(t, t+10);
vector<int> v2(10);
transform(v1.begin(), v1.end(), v2.begin(), bind1st(1,Add()));
for_each(v2.rbegin(), v2.rend(), Out<int>(cout));cout<<endl;
return 0;
}
Program outputs:
A. 10 9 8 7 6 5 4 3 2 1
B. 11 10 9 8 7 6 5 4 3 2
C. 1 2 3 4 5 6 7 8 9 10
D. 2 3 4 5 6 7 8 9 10 11
E. compilation error
Answer: E

CPP Resource   

NO.2 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==(const A & b) const { return a == b.a; }
};
bool compare(const A & a, const A & b) { return a == b; }
int main () {
int t[] = {1,2,3,3,5,1,2,4,4,5};
vector<A> v (t,t+10);
vector<A>::iterator it = v.begin();
while ( (it = adjacent_find (it, v.end(), compare)) != v.end()) {
cout<<it?v.begin()<<" ";it++;
}
cout<< endl;
return 0;
A. program will run forever
B. compilation error
C. program outputs: 2 7
D. program outputs: 3 8
E. program outputs: 2 3
Answer: C

CPP Objectives