QUESTION: 89

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

#include <iostream>
#include <algorithm>
#include <map>
using namespace std;

void myfunction(pair<int, int> i) {
cout << " " << i.first;
}

int main() {
int t[] = { 10, 5, 9, 6, 2, 4, 7, 8, 3, 1 };
map<int, int> m;
for(int i=0; i < 10; i++) {
m[i]=t[i];
}

for_each(m.begin(), m.end(), myfunction);
return 0;
}

Program outputs:

10 5 9 6 2 4 7 8 3 1
0 1 2 3 4 5 6 7 8 9
9 8 7 6 5 4 3 2 1 0
1 3 8 7 4 2 6 9 5 10
compilation error

Answer(s): B

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QUESTION: 90

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:

true false
1 0
1 false
true 0
compilation error

Answer(s): C

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QUESTION: 91

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

#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;
class B { int val;
public:
B(int v):val(v){}
int getV() const {return val;} bool operator < (const B & v) const { return val<v.val;} };
ostream & operator <<(ostream & out, const B & 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<<" "; } };
int main() {
int t[]={8, 10, 5, 1, 4, 6, 2, 7, 9, 3};
vector<B> v1(t, t+10);
sort(v1.begin(), v1.end());
for_each(v1.begin(), v1.end(), Out<B>(cout));cout<<endl;
return 0;
}

Program outputs:

8 10 5 1 4 6 2 7 9 3
1 2 3 4 5 6 7 8 9 10
compilation error
10 9 8 7 6 5 4 3 2 1

Answer(s): B

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QUESTION: 92

Which sentence is correct about the code below? Choose all that apply.

#include <iostream>
#include <algorithm>
#include <vector>
using namespace std;
class F {
int val;
public:
F(int v):val(v){}
bool operator() (int v) {
if (v == val) return true;
return false;
}
};

int main() {
int t[] = { 10, 5, 9, 6, 2, 4, 7, 8, 3, 1 };
vector<int> v1(t, t + 10);
if (find(v1.begin(), v1.end(), 6) == find(v1.begin(), v1.end(), F(6))) {
cout<<"Found!\n";
} else {
cout<<"Not found!\n";
}
return 0;
}

it will compile successfully
it will display Found!
it will display Not found!
it will not compile successfully

Answer(s): D

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