STR$() and VAL()

Up to now, we've been using string variables to hold strings and number variables to hold numbers. What if we really need to do some math with numbers that are in a string variable? Or maybe we need to get some numbers into a string variable somehow. QBASIC provides the STR$() and VAL() functions to help us out.

STR$() will let us convert from a number to a string. Like this:

 A = 25 ' A can only hold numbers
 PRINT A
 B$ = STR$(A) ' Convert A to a string, store in B$
 PRINT B$

VAL() will let us convert from a string to a number. Like this:

 A$ = "25" ' Can't do any math with a string variable
 PRINT A$
 B = VAL(A$) ' Convert A$ to a number, store in B
 PRINT B

Converting Numbers

Need to cover CINT(), FIX(), INT(), CDBL(), CSNG(), CLNG()