Mark Wickens

VAL

Purpose

Converts a numeric character string to a numeric value.

Format

VAL    ( string )
         └─┬──┘ 
   String expression

Example

A = VAL("345")

Parameters

string: String expression

Explanation

1. Converts a numeric character string to a numeric value.
2. Numeric characters are converted up to the point in the string that a non-numeric character is encountered. All subsequent characters are disregarded from the non-numeric character onwards (i.e. when A = VAL("123A456"), A = 123).
3. The value of this function becomes 0 when the length of the string is 0 or when the leading character is non-numeric.

See

• STR$

Sample Program

10  INPUT "VALUE1", A$
20  INPUT "VALUE2", B$
30  C$ = A$ + B$
40  C = VAL(A$) + VAL(B$)
50  PRINT C$, C

Performs string addition and numeric addition of two input strings.