Objective-c:如何舍入Float值？

Question

可能重复:
Objective-C中的舍入数字

在Objective-c中如何舍入Float值？

Answer 1

除了其他答案:

float theFloat = 1.23456;
int rounded = roundf(theFloat); NSLog(@"%d",rounded);
int roundedUp = ceil(theFloat); NSLog(@"%d",roundedUp);
int roundedDown = floor(theFloat); NSLog(@"%d",roundedDown);
// Note: int can be replaced by float

有关舍入到特定小数的信息,请参阅Alex Kazaev提到的问题.

Answer 2

该功能lroundf()将执行此操作:

float a=20.49;
int myInt = lroundf(a);