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1. Assunming, integer is 2 byte, What will be the output of the program? #include<stdio.h> int main() { printf("%x\n", -1>>1); return 0; }





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  • By: guest on 01 Jun 2017 06.00 pm
    Negative numbers are treated with 2's complement method.

    1's complement: Inverting the bits ( all 1s to 0s and all 0s to 1s)
    2's complement: Adding 1 to the result of 1's complement.
    Binary of 1(2byte) : 0000 0000 0000 0001 Representing -1: 1s complement of 1(2byte) : 1111 1111 1111 1110 Adding 1 to 1's comp. result : 1111 1111 1111 1111 Right shift 1bit(-1>>1): 1111 1111 1111 1111 (carry out 1) Hexadecimal : f f f f (Filled with 1s in the left side in the above step) Note: 1. Fill with 1s in the left side for right shift for negative numbers.
    2. Fill with 0s in the right side for left shift for negative numbers.
    3. Fill with 0s in the left side for right shift for positive numbers.
    4. Fill with 0s in the right side for left shift for positive numbers.
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