Consider the following pseudocode algorithm:

1  SET base TO 0
2  SET exponent TO 0
3  SET result TO 1
4  SET i TO 0
5
6  SEND "Enter base number: " TO DISPLAY
7  RECEIVE base FROM (INTEGER) KEYBOARD
8  SEND "Enter positive exponent: " TO DISPLAY
9  RECEIVE exponent FROM (INTEGER) KEYBOARD
10
11 IF (exponent < 0) THEN
12     SEND "Error: Exponent must be non-negative" TO DISPLAY
13 ELSE
14     FOR i FROM 1 TO exponent DO
15         SET result TO result * base
16     END FOR
17     SEND "The result is " & result TO DISPLAY
18 ENDIF