[Wesley221]

pawn Код:

stock hashit(string[])
{
    new salt = 100;
    new hashed = MD5_Hash(MD5_Hash("salt"), MD5_Hash("%s"));
    return hashed;
}

Youre using the argument 'string' in here, but youre not using it anywhere in the function. Instead you use the %s, which is only available in format (and maybe some other functions aswell). Change the "%s" in just 'string', and it should work.