[問題] 今天的來演講的老師給了一個很傻眼的問題
我自己嘗試寫他的問題看看
public class doublebug {
public static void main(String[] args) {
double x=0.5-0.3,y=0.3-0.1;
if(x==y)
System.out.println("x=y");
else
System.out.println("x=/=y");
}
}
居然是
x=0.2
y=0.19999999999999998
在人去看無疑是x=y 可是電腦是x=/=y
這到底是什麼魔術
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