Vector Basic Interpreter Basic 80, Reference Manual, Page: 167 / 190

If you have programs written in a BASIC other than BASIC-SO, some
minor adjustments may be necessary before running them with BASIC-SO •
. Here are some specific things to look for when converting BASIC
programs.
Delete all statements that are used to declare the length of strings.
A statement such as DIM A$(I,J), which dimensions a string array for J
elements of length I, should be converted to the BASIC-SO statement
DIM A$
(J) •
Some BASICs use a comma or ampersand for string concatenation. Each
of these must be changed to a plus sign, which is the operator for
BASIC-SO string concatenation.
In BASIC-SO, the MID$, RIGHT$, and LEFT$ functions
substrings of strings. Forms such as A$(I)
character in A$, or A$(I,J) to take a substring of
to position J, must be changed as follows:
are used to take
to access the Ith
A$ from position I
BASIC-SO
X$=MID$(A$,I,1)
X$=MID$(A$,I,J-I+1)
X$=A$ (I)
X$=A$(I,J)
If the substring reference is on the left side of an assignment and X$
is used to replace characters in A$, convert as follows:
A$(I)=X$
A$(I,J)=X$
8K BASIC-SO
A$=LEFT$ (A$,I-1)+X$+McrO$ (A$,I+1)
A$=LEFT$(A$,I-1)iX$iMIO$(A$,J+1)
A$(I)=X$
A$(I,J)=X$ MIO$(A$,1,1)=X$
MID$(A$,I,J-I+1)=X$