In C, the most common way to print debug output is by using the printf function from the standard I/O library.
printf
To engage with a C REPL, you might not find as straightforward a path as in languages like Python or JavaScript.
GDB (GNU Debugger) is the most commonly used debugger for C programming.
While C doesn’t have a built-in testing framework like some other languages, you can still write effective tests using assert.h for simple assertions or integrate third-party frameworks like CUnit or Unity for more structured testing.