I would like to know what is the differecnce between Integer 16, Integer 32 and Integer 64, and the difference between a signed integer and an unsigned integer(NSInteger and NSUInteger)
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I would like to know what is the differecnce between Integer 16, Integer 32 and Integer 64, and the difference between a signed integer and an unsigned integer(NSInteger and NSUInteger)
I’m not sure exactly what types you mean by “Integer 16”, “Integer 32”, and “Integer 64”, but normally, those numbers refer to the size in bits of the integer type.
The difference between a signed and an unsigned integer is the range of values it can represent. For example, a two’s-complement signed 16-bit integer can represent numbers between -32,768 and 32,767. An unsigned 16-bit integer can represent values between 0 and 65,535.
For most computers in use today, a signed integer of width n can represent the values [-2n-1,2n-1) and an unsigned integer of width n can represent values [0,2n).