- **C**
(*http://www.go4expert.com/forums/c/*)

- - **how unsigned integer store negative numbers**
(*http://www.go4expert.com/forums/unsigned-integer-store-negative-t28637/*)

how unsigned integer store negative numbershi! my doubt is how unsigned integers store negative numbers?
if i write ,int i=-9 then how -9 is stored in i(8 bit). if we again print the value in i we won't get -9.but we get some larger number.why it so? |

Re: how unsigned integer store negative numbersThey don't. Unsigned integers are unsigned, by definition, and therefore always positive.
If you try then what will happen is that the bit pattern of -9 will be stored in the integer and interpreted as a positive number. Negative numbers are stored in two's complement, which is like 1's complement (where you flip all the bits) but then you add 1. 00001001=9 11110110=1's complement of 9 11110111=2's complement of 9 So if this is put into unsigned 8-bit storage, then the result will be interpreted as 247. |

Re: how unsigned integer store negative numbersBy the way, int i=-9 defines a signed integer by default (unless your compiler has a flag that changes that default behaviour). For unsigned integers you need to specify the unsigned keyword, i.e.
Code:
`unsigned int i=-9;` |

All times are GMT +5.5. The time now is 12:02. |