如果数字以1结尾做某事 [英] If number ends with 1 do something

问题描述

我想做这样的事情：

if(day==1 || day==11 || day==21 || day==31 || day==41 ......){
    result="dan";
}
else{
    result="dana";
}

我怎么能用每个以一个结尾的数字来做到这一点，当然没有写所有数字？

How can i do that with every number that ends with one and of course without writing all numbers?

推荐答案

只需检查除以10的除法：

Just check the remainder of division by 10:

if (day % 10 == 1) { 
  result = "dan";
} else {
  result = "dana";
}

％是Modulo或模数运算符，除非您使用JavaScript，在这种情况下它是一个简单的余数运算符（不是真正的模数）。它将这两个数字分开，并返回余数。

% is the "Modulo" or "Modulus" Operator, unless you're using JavaScript, in which case it is a simple remainder operator (not a true modulo). It divides the two numbers, and returns the remainder.

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