[admantis]

This would require only a bit of logical thinking.

pawn Code:

new richest = INVALID_PLAYER_ID;
new amount = 0;

for(new p = 0; p < MAX_PLAYERS; p ++)
{
     if(GetPlayerMoney(p) > GetPlayerMoney(richest) || richest == INVALID_PLAYER_ID)
     {
        amount = GetPlayerMoney(p);
        richest = p;
    }
}
printf("The richest player is %d with $%d", richest, amount);