[DJDhan]

At the top of the script:

Код:

new sec,min,sttimer;

Under OnPlayerCommandText(playerid,cmdtext[])
Starting the count:

Код:

if(!strcmp(cmdtext,"/start",true))
{
	sec = 0;
	min = 0;
	sttimer = SetTimer("stopwatch",1000,1);
	return 1;
}

Stopping code:

Код:

if(!strcmp(cmdtext,"/stop",true))
{
	KillTimer(sttimer);
	new string[256];
	format(string,256,"Time elapsed : %d minutes and %d seconds",min,sec);
	SendClientMessage(playerid,0xffff00aa,string);
	return 1;
}

Anywhere in the script, but outside a callback:

Код:

forward stopwatch();

public stopwatch()
{
	sec++;
	if(sec>59)
	{
		sec = 0;
		min++;
	}
	return 1;
}

It's pretty basic.

I made it quick, so if there is any error, kindly let me know.