Question

7. Given two strings char s1[??] = “first string” and s2[??] = “second string”. 7.1. How much storage should be declared for each of the strings?

8. What would the function strlen(“today is Wednesday”); return?

9. Given a byte in 2’s complement What is 0x56 in decimal? a) -13 b) −110 c) 38 d) 67 e) none of the above

10. Given a six bit integer in 2’s complement What is 100100 in decimal? a) -28 b) −24 c) -36 d) 24 e) none of the above

11. if x = 0x36 then which of the following statements is incorrect a) if y = 0x42 then x | y is 0x76 b) if y = 0x12 then x & y is 0x2 c) if y = 0x42 then x & y is 0x2 d) if y = 0x41 then x & y is 0x0 e) All statement are correct

Answer 1

Thanks for the question.

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7.

in s1 array, we have 12 letters and we know that strings are ended with a null character so we need to count that as well, so the array size (storage) for s1 is 12+1=13

same way for s2, we have 13 letters, including the null character we end up with a size(storage) of 13+1=14

8.

strLen() function returns the total number so characters not including the null character so there are 18 letters from 't' to 'y', so it will return 18

9.

Since the leading number is 0, then we just need to convert the number to decimal so the answer will be
5*16+6=86

10.

-28

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