Question

Which one of the following gcc flags will cause warnings to be printed if your source code file contains problems?

a. std=c99
b. -Wall
c. -w
d. -o

Answer 1

The gcc flag that enables warnings for potential issues in source code is -Wall. This flag is essential for developers to identify and fix problems early in the development process.

Step-by-step explanation:

The gcc flag that will cause warnings to be printed if your source code file contains problems is -Wall. This option enables all the warnings about constructions that some users consider questionable, and that are easy to avoid (or modify to prevent the warning), even in conjunction with macros. It's a common practice to compile your code with the -Wall flag during development to help identify potential issues before they become bugs. The -std=c99 flag sets the language standard to C99, the -w flag suppresses all warnings, and the -o flag specifies the output file name.