[Solved] an error i can’t seem to find [closed]

by


Problem lies in the order of operations inside while() loop:

while (i != 1000)
{
    ++i;
    num.push_back(i);
    cout <<num[i]<<"\t"<< sqrt(num[i]) << "\n";
}

i starts from 0. In each iteration, you push_back an element and then print it using counter i – after its incrementation. So, num[i] refers to a non-yet-existing element.

Change your code to:

while (i < 1000)
{
    num.push_back(i + 1);
    cout <<num[i]<<"\t"<< sqrt(num[i]) << "\n";
    ++i;
}

1

solved an error i can’t seem to find [closed]