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Why wont this work? (kind of math formula) - Printable Version

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+--- Thread: Why wont this work? (kind of math formula) (/showthread.php?tid=403340)


Why wont this work? (kind of math formula) - 101 - 30.12.2012

pawn Код:
new robmoney = (400-rob[id])/4)*3);
        GivePlayerMoney(playerid, robmoney);
error 001: expected token: ";", but found ")"

Re: Why wont this work? (kind of math formula) - Threshold - 30.12.2012

You're just missing a few brackets, they amount of end brackets must equal the same as the beginning brackets.
Beginning = (
Ending = )

Your code:
pawn Код:
new robmoney = (((400-rob[id])/4)*3);
        GivePlayerMoney(playerid, robmoney);


Re: Why wont this work? (kind of math formula) - 101 - 30.12.2012

Holy mother of god, how could I miss that! Thanks bro.

AW: Why wont this work? (kind of math formula) - Nero_3D - 30.12.2012

Another important thing if you do maths with integer, always use the division as last!
Lets check out this example, normally you would think it works like that

158 / 4 * 3 = 39.5 * 3 = 118.5
158 * 3 / 4 = 474 / 4 = 118.5

But the truth is that the fractional part is cut off each time resulting in

158 / 4 * 3 = 39.5 * 3 => 39 * 3 = 117
158 * 3 / 4 = 474 / 4 = 118.5 => 118

pawn Код:
new robmoney = (((400 - rob[id]) * 3) / 4);


Re: Why wont this work? (kind of math formula) - Threshold - 30.12.2012

Unless you made it a float value.

AW: Re: Why wont this work? (kind of math formula) - Nero_3D - 30.12.2012

There is no reason to make it a float if you need an integer afterwards
And if you would use floats that you just could do * 0.75 (one operation) instead of * 3 / 4 (two operations)