Question

3. Given that a is an unsigned char, and is initialized to a=23, what is the result of b after each of the following code fragments? Assume that b is an unsigned char. Give the answer in decimal format b = a << 2; b = a / 7; b = a >> 4; b = a + 12;. Vî de + c b = -a; b = a - 29; b = a + 5; - b = a 6;

Answer 1

Answer:- The answers are written below-

3. Given that a is an unsigned char, and is initialized to a=23, what is the result of b after each of the following code fragments? Assume that b is an unsigned char. Give the answer in decimal format b - a < 2; 00010111 << 2 = 01011100 = 92 b = a >> 4; 00010111 >> 4 = 00000001 = 1 b = a % 4; remaider of 23/4 = 3 b = a + 5; 23 + 5 = 28 - a -6; 00010111 bitwise xor 00000110 = 000 10001 - 17 b = a / 7; 23/7 = quotient part = 3 b = a + 12; 23 x 12 = 276 but greater than 255 so lower 8-bit only ad that gives result = 20 b--a -23 = 2's complement of (00010111) = 11101001 = 233 b. - 29, = 2's complement of (6 i.e. 00000110) = 11111010 = 250 Note that unsigned variable can not keep negative numbers. So all bits are taken as a part of magnitude.