getline doesn't allow me to enter multiple lines for input

I am writing a program which is meant to take from the input, an integer N, then read in N number of lines. However when run, it allows me to enter N, then the first line, and then immediately ends without waiting for the following lines. E.g., if I input

3
Line 1
Line 2
Line 3

Then the output is line entered no. 3: Line 1, which happens immediately after I enter Line 1, which suggests it is completing the loop. How can I get it to read further lines from my console input? Looking at other questions and answers they all seem to stem from the use of cin >> var mixed with getline(), but I have avoided that here but still have the problem.

If it's a matter of the console, I'm using Powershell on Win10.

#include <iostream>
#include <string>
using namespace std;

int main(void){
    int N, i;
    string inptstr, temp;

    getline(cin, temp);
    N = stoi(temp);

    for (i = 0; i < N; i++);
        getline(cin, inptstr);
        cout << "Line entered no. " << i << ": " << inptstr << endl;
    
    return 0;
}

The loop

for (i = 0; i < N; i++);
    getline(cin, inptstr);
    cout << "Line entered no. " << i << ": " << inptstr << endl;

is wrong. Note that you have a ; immediately after for (i = 0; i < N; i++);. This means that this code is equivalent to the following:

for (i = 0; i < N; i++)
{
}

getline(cin, inptstr);
cout << "Line entered no. " << i << ": " << inptstr << endl;

In other words, your loop effectively does nothing.

What you want is probably the following:

for (i = 0; i < N; i++)
{
    getline(cin, inptstr);
    cout << "Line entered no. " << i << ": " << inptstr << endl;
}