Doubt in ABAP Data types

Hi friends,

I want a clear idea of what is the diference between data type 'f' and 'p' with examples and in what situation which should be used.

Similary what and where is 'x' and 'xstring' is used .. In what situations we 'll handly BYTE data ?????

Iam not at all clear ... so eagerly waiting for ur responses with sample examples and clear explanations 😊

thanks in advance 😊

Cheers,

R.Kripa.