Determines whether the leftmost character of the specified character expression is a digit (0 through 9).

ISDIGIT(cExpression)

Parameters

cExpression

Specifies the character expression that ISDIGIT( ) tests. Any characters after the first character in cExpression are ignored.

Return Value

Remarks

Example

	Copy Code
CLOSE DATABASES OPEN DATABASE (HOME(2) + 'Data\testdata') USE orders && Open Orders table CLEAR DISPLAY cust_id ? ISDIGIT(cust_id) && Displays .F. DISPLAY order_dsc ? ISDIGIT(ALLTRIM(STR(order_dsc))) && Displays .T.

See Also