Question

What happens if the same variable identifier is defined more than once in the same scope?

a. Only the first variable will be processed, while the second variable is ignored.
b. The program will not compile.
c. The program will crash during execution.
d. The program may develop logic errors.

Answer 1

Declaring the same variable identifier more than once in the same scope can lead to a compilation error or logic errors, depending on the programming language, as the latter declaration may overwrite the previous one.

Step-by-step explanation:

When the same variable identifier is defined more than once in the same scope in a programming language, the behavior can vary depending on the language rules. In some languages, this may result in a compilation error, preventing the program from being compiled. In others, the second declaration may simply overwrite the first, potentially leading to logic errors because the initial value assigned to the variable might be unexpectedly replaced.

It is essential for programmers to avoid declaring the same variable multiple times in the same scope to ensure that the program behaves as expected and to maintain code clarity. Otherwise, it can lead to bugs and maintenance issues.