Exercise - Book Programming-Principles-and-Practice-Using-C++

I'm Brazilian. I try to implement a very simple exercise from the book Principles and Practices of Programming with C ++, the statement is as follows:
1. Write a program that consists of a while loop that reads (at each loop iteration) two ints and then prints them out. End the program when a '|' is read.

Here is my code:

Code:

#include <iostream>
#include <vector>
using namespace std;
int main()
{
    vector<int>num;
    int temp;
    int i=0;
    cout << "Write 2 numbers: \n";
    while ( cin >> temp )
    {
        
        cout << "First number = " << temp << "\n Write the second: ";
        num.push_back(temp);
        ++i;
        cin >> temp;
        num.push_back(temp);
        cout << "\n The numbers: " << num[i-1] << " and " << num[i];
        cout << endl;
        ++i;
    }
}

I would like to complement my program so that the program ends with the typing "|". The problem is that my program ends when I type any character other than numbers.