Question

在将若干份标为示意图时,我可以限制在标注之后的特性,例如%.03f。 (点后显示3位数),但我如何删除点上的所有数字?

例如,我喜欢<代码>100.943到>>格式<943>。

Answer 1

I think the only way for you to do that would be to remove the number before the decimal point using math, or string manipulation after the fact, like componentsSeparatedByString:@"."

A simple math way of removing it would be:

float initialValue = 100.943f;
int beforeDecimal = (int)initialValue;
float afterDecimal = initialValue - beforeDecimal;

Answer 2

http://developer.apple.com/library/mac/documentation/Cocoa/Reference/Foundation/Classes/NSNumberFormatter_Class/"rel=“nofollow”NSNumberFormatter, 及其

float f = 123.456;
NSNumber * nF = [NSNumber numberWithFloat:f];
NSNumberFormatter * formatter = [[NSNumberFormatter alloc] init];
[formatter setMaximumIntegerDigits:0];
NSLog(@"%@", [formatter stringFromNumber:nF]);

2011-11-23 18:36:59.138

Answer 3

奥克·我猜想,我现在谈谈你的问题。

这里是你们将只摆脱扼杀的又一个解决办法。

例如:

NSString *floatAsString = @"123.456";
NSArray stringDivisions = [floatAsString componentsSeparatedByString:@"."];

Here what you will get in array is: 123 and 456 to separate string objects. Once you get two separate strings, you can play with them.

这是你们所需要的吗?

Answer 4

Simple way to do that, Here is an example,

首先,将你的胎体改为浮值。

浮动×=102.943;

in = x;

a. 浮动=x % y;

NSLog(@" x : %f y : %d ans : %f", x, y, ans);

因此,产出如下:

页: 1

y: 102

a 0.943000

希望是你们所需要的。

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