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Main Page → Exercises → C++ → Solve an Exercise

Language/Type: C++ set collections STL

What is the output of the following code? Assume that a set prints in {10, 20, 30} format with its elements in sorted order.

set<int> set;
set.insert(74);
set.insert(12);
set.insert(74);
set.insert(74);
set.insert(43);
set.erase(74);
set.erase(999);
set.erase(43);
set.insert(32);
set.insert(12);
set.insert(9);
set.insert(999);
cout << set << endl;

`output`
`{12, 32, 9, 999}` `{9, 12, 32, 999}` `{12, 74, 74, 32, 12, 9, 999}` `{9, 12, 12, 32, 74, 74, 999}` (order shuffled)

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