Chapter 7 - Input Validation

7.1; 7.2; 7.3; 7.4;

garbage in, garbage out

What does “GIGO” stands for?

input validation

the term, when the input is invalid, the program should discard it and prompt the user to enter the correct data.

priming read, error trap, error handler

the first input operation, appears just before the loop

defensive programming

the practice of anticipating errors that can happen while a program us running, and designing the program to avoid those errors

empty input

error which happens when an input operation attempts to read data, but there is no data to read