Programming flag variables are used in programs for remembering states or conditions. What are the two best data types to use for flags? Give an example of a flag that remembers if a value is negative, zero or positive.

What will be an ideal response?

Program flags are usually Boolean or integer, and sometime chars. The two best are bools and ints. If a program had to remember if a value was positive, negative or zero, you’d need to use an integer value or char. If you used an int you could set the value to –1, 0, or +1. If you used a char you could use the letters ‘p’, ‘z’, or ‘n’.