Function | Parameter | Return value | Description |
---|---|---|---|
ord | character | ASCII code | Converts a single character to its ASCII value |
chr | ASCII code | character | Converts an ASCII value to its corresponding character value |
string |
|
string | Converts the value of an expression to a string |
number |
|
integer | Converts the characters of a string or a floating-point value to an integer value. A boolean value is converted to 0 for invalid expressions (false) or 1 for valid (true) expressions. |
float |
|
float | Converts the characters of a string or an integer value to a floating-point value. A boolean value is converted to 0.0 for invalid expressions (false) or 1.0 for valid (true) expressions |
ConvertFunc = "chr" "(" Expr ")" | "ord" "(" Expr ")" | "string" "(" Expr ")" | "number" "(" Expr ")" | "float" "(" Expr ")" | "boolean" "(" Expr ")".
Alphanumeric characters after digits are ignored.
dcltrans transaction TMain var I : number; f : float; s : string(14) init "ProductName"; s1 : string(14); b1 : boolean; begin I := ord('x'); // --> i: 120 s[1] := chr(I+1); // --> s[1]: 'y' I := ord(s[2]); // --> i: 114 I := 123; s := string(I*10+1000); // --> s: "2230" I := number(s); // --> i: 2230 s := "-123.99"; I := number(s); // --> i: -123 s := "123aby"; I := number(s); // --> i: 123 s := "x123.99"; I := number(s); // --> i: 0 s := "A" + string(I); // --> s: "A0" s := "-129.77"; f := float(s); // --> f: -129.77 I := 20500; f := float(I); // --> f: 20500.0 b1 := boolean("TRUE"); // --> b1: true s := string(b1); // --> s: "TRUE" i := number(b1); // --> i: 1 end TMain;