Thread: What are macros and why build your own c library?

Originally Posted by Sankait Laroiya

Hello guys, I came across a word MACRO, what does it mean in programming?

In C macros are divided into MACRO constants and MACRO that take parameters.

The MACRO constants are used to avoid doing magic number programming [constants].
Magic number (programming) - Wikipedia, the free encyclopedia

Edit2: Look up the "#define" for more info on MACROs

Edit3: http://en.wikipedia.org/wiki/C_preprocessor

MACRO that take parameters are too complex for me to explain to anyone; esp. to a newbie C programmer.

Originally Posted by Sankait Laroiya

And why people create their own c libraries?

They do it in order to make useful programs that are NOT tiny.
They do it in order to reuse the code/libraries.
They do it to avoid using other people library they do NOT wish to use.
They do it to avoid re-inventing the wheel in every program they write.

Tim S.