What is the purpose of testing a program with sample data or input?

testing to make sure that the program is functioning as intended

Explanation:

Sample Data, Test Data, or Inputs are all used with the main purpose of testing to make sure that the program is functioning as intended. The "sample data" needs to provide a very specific output value when inserted into the program. This output value is already known beforehand, therefore if the program outputs the correct "expected" value then the program is functioning correctly.

try this:

go tos official website.

click on your profile pic at the top right of the screen and click 'edit profile'.

click on "preferences" and press "year of birth".

and then just maybe try to reset whatever error made before by typing in the correct age details again. hope this !