toggle a bit at ith positon

Possible Duplicate:
How do you set, clear and toggle a single bit in C?

Can some one help me how to toggle a bit at ith position. One way is to ((n>>i)^1) < < i. Are there any other ways ?

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n ^= 1U << i很容易，不是吗？

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你可以做

pow(2, i) ^ n

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