21 lines
421 B
C++
21 lines
421 B
C++
#include <iostream>
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#include <map>
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int main() {
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const int N = 1000000;
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std::map<int, int> m;
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// fill the map with some values
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for (int i = 0; i < N; ++i) {
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m[i] = i;
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}
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// erase all elements using iterators
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for (std::map<int, int>::iterator itr = m.begin(); itr != m.end(); ) {
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itr = m.erase(itr); // erase using iterator and move to the next element
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}
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return 0;
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}
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