需要交换功能 [英] Need swap function

问题描述

如何交换不带临时变量的2个数字?



我怎样才能互换任何2个数字????
不带任何变量??????
请回答我的问题

How do I swap 2 numbers without temp variable?



how can i interchang any 2 numbers????
with out taking any variable?????
plz ans me its urjent

推荐答案

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尝试一下:

Try this:

a = a+b  // a = 5, b=10     

b = a-b  // 15-10=5  

a = a-b  // 15-5=10

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