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

Language/Type: C++ vector collections STL

What are the contents of the vector after the following code executes? Assume that a vector would print in the format {10, 20, 30}.

vector<int> vec;
for (int i = 1; i <= 8; i++) {
    vec += 10 * i;  //   0   1   2   3   4   5   6   7
}                   // {10, 20, 30, 40, 50, 60, 70, 80}
for (int i = 0; i < vec.size(); i++) {
    vec.erase(vec.begin() + i);
}
cout << vec << endl;

`vector contents`
`{}` `{10, 20, 30, 40, 50, 60, 70, 80}` `{20, 40, 60, 80}` `{10, 20, 30, 40}` `other`

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