Golang将float64转换为int错误 | 那些遇到过的问题

icz*_*cza 6

100.55100.55100.55

100.55100.551/30.333333333....

float64float64

现在当你"说"这个:

x := 100.55

xxfloat64IEEE-754100.55100.55

x := 100.55
fmt.Printf("%.50f\n", x)

100.54999999999999715782905695959925651550292968750000

100.55

100float64(int(x))100.0

x = x - float64(int(x))
fmt.Printf("%.50f\n", x)

0.54999999999999715782905695959925651550292968750000

0.550.55float64

fmt.Printf()%f

fmt.Printf("%.2f\n", x)

结果:

0.55

100

cents := 10055
fmt.Printf("%d.%d $", cents/100, cents%100)

输出:

100.55 $

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