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Answer to Question #76577 in C++ for LEE JIA WEI

Question #76577
Write a function remove_odd that takes in a set of integers and removes all the odd elements.

Hint: you will need to use an iterator to iterate through the elements in a set.

Hint: In C++11, an auto keyword can be use to automatically infer the type. e.g. autoiter = s.begin()

#include <set>

using namespace std;

void remove_odd(set<int> s) {
//code
}
Expert's answer
void remove_odd(std::set<int> &s)
{

for (auto _it = s.begin(); _it != s.end(); )
{
if (*_it % 2 != 0) s.erase(_it++);

else { ++_it; };

}
};

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