INSTR and LEN Question

[MLambert]

The following is a simple program


C = 20 / 3

PRINT C

C$ = STR$(C)

Z = INSTR(1, STR$(C), ".")
PRINT Z

Z = INSTR(1, C$, ".")
PRINT Z

Z = LEN(C)
PRINT Z

Z = LEN(C$)
PRINT Z

Can someone tell me why the INSTR is not showing the correct position of the decimal point
and why is the length of the fields not correct ?

Mike

[visionmercer]

STR$ returns the number with a leading space or minus
The LEN function returns the number of bytes used by a variable value and the number of characters in a STRING.

[MLambert]

thanks .. what about the INSTR ??

[STxAxTIC]

Probably looking at invisible spaces. Use LTRIM$(RTRIM$()) right after conversion to a string.

[_vince]

Probably looking at invisible spaces. Use LTRIM$(RTRIM$()) right after conversion to a string.

Which is equivalent to _TRIM$.  There's also _TRIMX$, _TRIM9$, _TRIM_butonlyonafullmoon$ which only works with Steve's version

[EricE]

Printing double quotes, CHR$(34), around the string will show the true length of the string.

Code: QB64: [Select]

1. C = 20 / 3
2.  
3. ' Frame the string with double quotes
4. PRINT CHR$(34) + STR$(C) + CHR$(34)
5.  
6. C$ = STR$(C)
7.  
8. Z = INSTR(1, STR$(C), ".")
9. PRINT Z
10.  
11. Z = INSTR(1, C$, ".")
12. PRINT Z
13.  
14. Z = LEN(C)
15. PRINT Z
16.  
17. Z = LEN(C$)
18. PRINT Z
19.