A primary key is a field that contains data unique to a record
Answer:
All of these statements are true.
Explanation:
Since the while loop is reversing the integer number and leaving the highest order digit in the num and stores the reversed number in the newNum variable.
It skips one digit so if the num is in the range of [100,1000] it will result in a number between 10 and 100.
This loop can never go in infinite loop for any initial value of num because the loop will run as many times as the number of digits.
and if the value of the num is <=10 the while loop will never run and the value of newNum will be 0.
This is true. Recording relative positions in most cases will reduce total programming time and make it over all more efficient.
