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Sorry I made it unclear

I need to write data pointed to a file and after that displaying the file content to screen

Eric

Gday everyone,

Please help me.

How to read and write a pointer of character to a file?

Thanks in advance.

Eric

I didn't put the code for declaration of fork to make it easy to read.Sorry

Ofcourse I tried to run it for ages. I tried to print out the buffer 'msg_cat', then it works.
But when I call it from...

Gday everyone,

I'd like to display recent received messages in the buffer 'msg_cat' when user types in 'display', but it always displays 'No recent messages' after I concatenated messages into...

GDay everyone,

I have a problem that I spent so much time on it.

How can I fix my code(below) to output the buffer msg_cat in function A from function B ?

Please help if you're interested...