CPP practice question 26 of 30
What happens when you attempt to compile and run the following code? #include #include #include using namespace std; templatestruct Out { ostream &…
Choose your answer, then check it against the explanation.
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<<val<<" ";
}
};
struct Sequence {
int start;
Sequence(int start):start(start){}
int operator()() { return 10*(1+(start++ %3)); } };
int main() {
vector v1(10);
vector v2(10);
generate(v1.begin(), v1.end(), Sequence(1));
sort(v1.rbegin(), v1.rend());
unique_copy(v1.begin(),v1.end(), v2.begin());
for_each(v2.begin(), v2.end(), Out(cout) );cout<<endl;
return 0;
}
Program outputs:
Question 26 of 30
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