Operator: + (Addition)

The + operator adds two integer or floating-point numbers or strings together and returns the result.

Using the '+' operator is much easier and more efficient than using the strConcat() function.

See example 2 below.

Example 1:

INCLUDE rtcu.inc
 
VAR
   a : INT; 
   b : INT;
END_VAR;
 
PROGRAM test;
 
BEGIN
   ...
   a := b + 10;
   ...
END;
 
END_PROGRAM;

Example 2 :

INCLUDE rtcu.inc
 
VAR
   a : STRING; 
   b : STRING;
   c : STRING;
END_VAR;
 
PROGRAM test;
 
   a := "Hello";
   b := "World";
   c := a + " big " + b;        // c will be equal to "Hello big World".
   ...
END_PROGRAM;