Comment by fjfaase

A good idea that I had not thought about.

defined is a pre-processor 'keyword' that only is used in conditions after #if and #elif. Elsewhere it is ignored by the pre-processor. You could argue that it is not a real keyword. But lets see what happens when you define it as a define with: '#define defined 1'.

The function main can be defined with two or three parameters. The third contains the environment. You can also get the environment with 'argv + (argc + 1)'.