What does this for (auto &x : ic)?

Asked Apr 17 '22 at 17:57

Active Apr 17 '22 at 17:57

Viewed 35 times

What does this code do for (auto &x : ic)? How can I write the same instruction but in the form for ( init-expression ; cond-expression ; loop-expression ) statement

int main()
{
    int n;
    cin >> n;
    int j=0;
    vector<int> ic(n), fc(n);
    for (auto &x : ic)
        cin >> x;
    for (auto &x : fc)
        cin >> x;
}

asked Apr 17 '22 at 17:57

alexandraa

Its exactly the same thing, basically you are using range based for loop and the variable x directly references a position in the vector instead of creating a copy of the value at a index. – Samarthya Singh Apr 17 '22 at 18:06
@SamarthyaSingh But how can I rewrite this code sequence? I tried for (i = 0; i > x;} and it doesn't do the same – alexandraa Apr 17 '22 at 18:34
@alexandraa `cin >> ic[i]`, similar for `fc` vector. – Yksisarvinen Apr 17 '22 at 19:21
As @alexandraa said. – Samarthya Singh Apr 18 '22 at 17:07

What does this for (auto &x : ic)?

0 Answers0