Look at the following statement. if (!isdigit(var1))
The expression being tested by this statement will evaluate to true if var1 is:
A) an alphabetic character
B) 9
C) a symbol such as $ or &
D) both a and c
E) None of these

Question

Quizplus · Accepted Answer

The function `isdigit()` checks if a character is a digit (0-9). If `!isdigit(var1)` is true, it means `var1` is not a digit, which includes alphabetic characters and symbols.

Look at the Following Statement. If (!Isdigit(var1))