/C++/Error: initialization with "{...}" expected for aggregate object - c++

Error: initialization with "{...}" expected for aggregate object - c++

int arrayone[3] = {0}; // assign all items with 0

int arraytwo[3] = {1, 2, 3 }; // assign each item with 1, 2 and 3

int arraythree[3]; // assign arraythree with arraytwo
for (int i = 0; i < 3; ++i) {
    arraythree[i] = arraytwo[i];
}

Source: stackoverflow.com

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