CPP
cpp
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#include <iostream>
using namespace std;
#include <map>
class test
{
public:
test(int a = 0) : m_a(a){}
bool operator<(const test& obj) const
{
return m_a<obj.m_a;
}
int m_a;
};
int main() {
map<test,int> mp;
mp[test(1)] = 1;
mp[test(2)] = 3;
for(auto itr = mp.begin();itr!=mp.end();itr++)
{
cout << itr->second << endl;
}
return 0;
}
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