managing father and son processes

I would like the son process to communicate with the father because when the son dies, it seem that the variables modified by the son go lost, because the son creates a copy of all the variablesm I'd like isntead some of them to remain there

if you have examples pleasepast some code

we are new to c programming

thanks

Yeah, which operating system and compiler are you using?

Not to be picky, but this is deep stuff for newbies.

I know it's noobish but....
linux, gcc

thanks for your help

man 2 pipe

Probably the easiest way is to create a pipe() before fork() and execl() the child process.
The child can then write() to one end of the pipe, and the parent can read() from the other end.

A board search for "pipe" will reveal some stuff

or you can use threads...