SADD
Synopsis
SADD(numstr1,numstr2)
Arguments
numstr  An expression that resolves to a number or numeric string. 
Description
The SADD function adds two numeric values, expressed as either numbers or as strings, and returns the result. Leading plus signs and leading and trailing zeros are ignored. A string is parsed as a number until a nonnumeric character is encountered. Thus “7dwarves” is parsed as 7. Nonnumeric strings and the null string are parsed as 0.
Arithmetic Operations

To perform arithmetic operations on numeric strings, use the SADD, SSUB, SMUL, and SDIV functions.

To perform arithmetic operations on floating point numbers, use the FADD, FSUB, FMUL, and FDIV functions, or use the standard arithmetic operators.

To perform integer division, use the DIV function. To perform modulo division, use the MOD function.

To perform arithmetic operations on corresponding elements of dynamic arrays, use the ADDS, SUBS, MULS, DIVS, and MODS functions.

To add together the element values within a single dynamic array, use either the SUM function (for singlelevel dynamic arrays) or the SUMMATION function (for multilevel dynamic arrays).

To perform numeric comparison operations, use the SCMP function, or use the standard comparison operators.
Examples
The following examples use the SADD function to add two numeric strings. All of these examples return 10:
PRINT SADD(7,3) PRINT SADD("7","3") PRINT SADD("+7.00","003") PRINT SADD("7dwarves","3wishes")
All of the following examples return 7:
PRINT SADD(7,0) PRINT SADD("7","") PRINT SADD("7","three")