String Operations

String variables can be concatenated using the + operator. The syntax is:

C$ = A$ + B$

Concatenation can also include constant strings:

total$ = "A$ is " + A$ + " and B$ is " + B$

The string functions can be used in a defining command such as

this$ = "Here is the lens title: " + $LENSNAME()

String variables are printed just like other strings:

PRINT "Here is A$: ", A$

Note that the PRINT function can only print single string variables; there is no support for the concatenation operand or string functions inside print commands. The correct procedure is to concatenate the strings into a new string and then print the new string:

A$ = B$ + C$ 
PRINT A$

Alternatively, the comma acts as a concatenation operand:

PRINT A$, B$, C$

String functions cannot be printed directly like this:

PRINT $LENSNAME() ! NOT CORRECT !!!

Instead, the correct procedure is to assign the function result to a variable and then print the variable:

Z$ = $LENSNAME() 
PRINT Z$ 

Next:

• String Logical Operators