I don't know what I did wrong that causes this error to appear.
This is the wrong code in the program:
if (set<int>::iterator itr = s.find(x)) {
And here is the whole program:
int main() {
set<int>s;
int q, y, x;
cin >> q;
for (int i = 0; i < q; i++) {
cin >> y;
if (y == 1) {
cin >> x;
s.insert(x);
}
else if (y == 2) {
cin >> x;
if (set<int>::iterator itr = s.find(x)) {
s.erase(x);
}
else {
}
}
else {
cin >> x;
if (set<int>::iterator itr = s.find(x)) {
cout << "Yes";
}
else {
cout << "No";
}
}
};
return 0;
}
Does someone know how to fix this error?
