Write a program $($using do$-$while$)$ that displays the square of a positive number you enter in via the keyboard. The program should keep asking you for a number until you enter in a negative number at which point it prints the square of that number and then stops asking you. Here's example input$/$output:

Enter an integer: $10$

$100$

Enter an integer: $12$

$144$

Enter an integer: $-1$

$1$