ios 在iOS中生成范围内的随机数？
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Generate random number in range in iOS?
提问by Frankrockz
I'm trying to get a random number generator working on the iPhone. There are two text fields a label and a button. Enter the minimum number in one textfield and the maximum in the next. Clicking the button will display the random number in the UILabel. I did this once before and can't figure it out for the life of me today. Any code or places I could visit to find this out would be fantastic.
我正在尝试让一个随机数生成器在 iPhone 上工作。有两个文本字段，一个标签和一个按钮。在一个文本字段中输入最小值，在下一个文本字段中输入最大值。单击该按钮将在 UILabel 中显示随机数。我以前做过一次，但我今天的生活无法弄清楚。我可以访问的任何代码或地方都很棒。
Thanks
谢谢
回答by Dair
NSString *min = myMinTextField.text; //Get the current text from your minimum and maximum textfields.
NSString *max = myMaxTextField.text;
int randNum = rand() % ([max intValue] - [min intValue]) + [min intValue]; //create the random number.
NSString *num = [NSString stringWithFormat:@"%d", randNum]; //Make the number into a string.
[myLabel setText:num]; // Give your label the value of the string that contains the number.
Update:
更新：
It appears that it is probably better to use arc4randomas opposed to randyou can see more about it here. Just replace all the rands with arc4random
看起来使用它可能更好，arc4random而不是rand您可以在此处查看更多相关信息。只需将所有rands替换为arc4random
回答by Peter DeWeese
#include <stdlib.h>
int randomNumber = min + rand() % (max-min);
