the maximum value for an 32-Bit integer is: 2^31-1 = 2147483647. but just with negative and positive number. because the half of the number is negative. so the real maximum value is 2^32-1 = 4294967295. but in this case we just use positive numbers.the maximum value for an 32-Bit integer is: 2^3
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iOS - int (unsigned int)最大值为2147483647,unsigned int不工作?
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