#include <a_samp>

public OnPlayerCommandText(playerid, cmdtext[])
{
        new cmd[128], idx;
        cmd = strtok(cmdtext, idx);

        if(strcmp(cmd, "/mensagembot", true) == 0)
    {
        new length = strlen(cmdtext);
        while ((idx < length) && (cmdtext[idx] <= ' '))
        {
            idx++;
        }
        new offset = idx;
        new result[64];
        while ((idx < length) && ((idx - offset) < (sizeof(result) - 1)))
        {
            result[idx - offset] = cmdtext[idx];
            idx++;
        }
        result[idx - offset] = EOS;

        if(!strlen(result))
        {
            SendClientMessage(playerid,COR, "/mensagembot [MENSAGEM]");
            return 1;
        }

        new string[128];
        format(string, sizeof(string), "Chuck Nóia:%s", (result));
        return 1;
    }

        return 0;
}

strtok(const string[], &index)
{
    new length = strlen(string);
    while ((index < length) && (string[index] <= ' '))
    {
        index++;
    }

    new offset = index;
    new result[20];
    while ((index < length) && (string[index] > ' ') && ((index - offset) < (sizeof(result) - 1)))
    {
        result[index - offset] = string[index];
        index++;
    }
    result[index - offset] = EOS;
    return result;
}