[問題] 如何處理無窮小數的輸出已達到現實中的值?
假設今天我存入一個浮點數到double
被存入的數: 123.7 (隨便舉例..我也不知道123.7存進去之後是否會變成無窮)
double中所存的數為 123.6333333........
我在輸出的時候要如何能夠使輸出維123.7呢?
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