String Concatenation

Five Functions for string manipulation are

Username = cmcalpine83

Left(username, 1) = c
right(username, 4) = ne83
mid(username, 6, 4) = pine

ucase(username) = CMCALPINE83
lcase(username) = cmcalpine83

String Functions, Pre-Defined Functions. Already written by someone else, no need to recode them.No need to test

User defined functions we will make.

Function vs. Routine? Function returns one value