如果调用if语句并且所有条件都为真,那么还要调用所有其他if语句吗?
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if coins > 19 && speedLvl == 1 {
speedLvl = 2
coins = coins - 20
}
else if coins > 49 && speedLvl == 2 {
speedLvl = 3
coins = coins - 50
}
else if coins > 99 && speedLvl == 3 {
speedLvl = 4
coins = coins - 100
}
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如果玩家有1000个硬币,那么speedLvl转到4个?