[Konstantinos]

There's a much simplier/faster way.

pawn Код:

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

Example of usage:

pawn Код:

if (IsNumeric(inputtext))
{
    // inputtext contains only numbers, do something here..
}