Check if string is a number - Printable Version

Check if string is a number - Printable Version

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+---- Thread: Check if string is a number (/showthread.php?tid=208551)

Check if string is a number - GiS - 08.01.2011

Hey,

how can I check if the insert data in a string is a number or not?

Re: Check if string is a number - Alex_Valde - 08.01.2011

Use IsNumeric function:

pawn Code:

IsNumeric(const string[])
{
    for (new i = 0, j = strlen(string); i < j; i++)
    {
        if (string[i] > '9' || string[i] < '0') return 0;
    }
    return 1;
}

Re: Check if string is a number - GiS - 08.01.2011

pawn Code:

new input;
        format(input, sizeof(input), "%i", inputtext);
        if(input < 12 || input > 120)
        {

What's wrong on that format?

It says:

PHP Code:



(407) : error 035: argument type mismatch (argument 1)

(407) : error 035: argument type mismatch (argument 1)

Pawn compiler 3.2.3664              Copyright (c) 1997-2006, ITB CompuPhase



2 Errors.

Re: Check if string is a number - Alex_Valde - 08.01.2011

Try this:

pawn Code:

if(inputtext < 12 || inputtext > 120)

But you need to change something else too.
This is full code:

pawn Code:

new input[128];//You need to define the length of the input before formating it.
        format(input, sizeof(input), "%i", inputtext);
        if(inputtext < 12 || inputtext > 120)
        {

Re: Check if string is a number - GiS - 08.01.2011

Well I do this in the OnDialogResponse Callback.

I get the following error:

pawn Code:

(406) : error 033: array must be indexed (variable "inputtext")

pawn Code:

if(inputtext < 12 || inputtext > 120)
{
//...

Re: Check if string is a number - Alex_Valde - 08.01.2011

Ahh, sorry didn't know that...

Then try:

pawn Code:

if(strval(inputtext) < 12 || strval(inputtext) > 120)