ios NSString stringWithFormat 添加一个百分比
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NSString stringWithFormat adding a percent
提问by CodeGuy
How can I add a percent to my stringWithFormat function? For example, I'd like to have the following:
如何在 stringWithFormat 函数中添加百分比？例如，我想要以下内容：
float someFloat = 40.233f;
NSString *str = [NSString stringWithFormat:@"%.02f%",someFloat];
This should cause the string to be:
这应该导致字符串为：
40.23%
But it is not the case. How can I achieve this?
但事实并非如此。我怎样才能做到这一点？
回答by F'x
%being the character beginning printf-style formats, it simply needs to be doubled:
%作为以 printf 样式格式开头的字符，它只需要加倍：
float someFloat = 40.233f;
NSString *str = [NSString stringWithFormat:@"%.02f%%",someFloat];
回答by spolu
The escape code for a percent sign is “%%”, so your code would look like this
百分号的转义码是“%%”，所以你的代码看起来像这样
[NSString stringWithFormat:@"%d%%", someDigit];
This is also true for NSLog() and printf() formats.
对于 NSLog() 和 printf() 格式也是如此。
Cited from How to add percent sign to NSString.
