C++ Institute Related Exams
CPP Exam
What happens when you attempt to compile and run the following code?
#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;} };
template
ostream & out;
Out(ostream & o): out(o){}
void operator() (const T & val ) { out< struct Add { B operator()(B & a, B & 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(), bind1st(Add(),1)); for_each(v2.rbegin(), v2.rend(), Out(cout));cout<<endl; return 0; } Program outputs:
What happens when you attempt to compile and run the following code?
#include
#include
#include
#include
#include
using namespace std;
struct display {
void operator() (int i) {cout << " " << i;}
};
int main() {
int t[] = { 10, 5, 9, 6, 2, 4, 7, 8, 3, 1 };
vector
deque
set
for_each(v1.begin(), v1.end(), display); //Line I
for_each(d1.begin(), d1.end(), *(new display())); // Line II
for_each(s1.begin(), s1.end(), display()); // Line III
return 0;
}
What happens when you attempt to compile and run the following code?
#include
#include
#include
using namespace std;
template
int calculate(T start, T end)
{
int s = 0;
while (start != end)
s+= *start; start++;return s;
}
int main ()
{
int t[] = {1, 2 ,3 ,4 ,5, 6 , 7, 8 , 9, 10};
vector
deque
cout<<calculate(t,t+10)<<" ";
cout<<calculate(v1.begin()+1,v1.end()?2)<<" ";
cout<<calculate(d1.rbegin()+1,d1.rend()?2)<<" ";
cout<<calculate(t[0],t[10])<<" ";
cout<<endl;
return 0;
}