UniBasic Commands Reference - Rocket Software

Examples
In the following example, the program segment extracts the first character of the
variable LAST.NAME (in this case, an S):
LAST.NAME = 'Smith'
L.INITIAL = LAST.NAME[1,1]
In the next example, the program segment changes the first letter of the word Bind in
the variable TITLE to W. The resulting string is “Gone with the Wind”.
TITLE = 'Gone with the Bind'
TITLE[15,1] = 'W'
In the next example, the program segment changes the substring 234 spaces:
A = "12345"
A[2,3] = ""
In BASICTYPE U, system output is as follows:
A = "1 5"
In BASICTYPEs M and P, the substring is extracted as follows:
A = "15"
The following program inserts the null value into string X, which contains 12345, and
then prints this element before and after converting @NULL to the printable string
“@NULL”:
X=12345
X[3,1]=@NULL
PRINT "X[3,1] is printed on the next line."
PRINT X[3,1]
X = CHANGE(X[3,1], @NULL,"@NULL")
PRINT "X[3,1] is printed on the next line."
PRINT X
This program prints the following text:
X[3,1] is printed on the next line.
X[3,1] is printed on the next line.
@NULL
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