Question

Question 4] All variables and headers properly defined for the C functional program. char st 80 1: unsigned *ptri-s .a) What is the size of the array 's' in bytes? .b) ptr1 has a hex-decimal value of 28FE60 referring to the first element of st 1 array. What is the decimal value? c) Following this functional software; a Ans size- b Ans-- for (i 0; sl i0:+i) printf( "in %c: It %dVt",toupper(s[i] . (i.2), toupper( st i l . (i.2))); what character sequence is output, if s array is inputted with: florida; c. Ans---_ d) For part (c ) above, what is the corresponding ASCII code sequence? d. Ans e)Following this functional software for (ka 25; k>-20; -k) memory [k]·(( 10"(k-5)-20)); printf ("in memory [%d]-vt %d", k, memory [k]); What do memory locations 22 and 24 contain? e. memory[22)__ memory[24) -memoryl24]. What is the final value for loop variable k? final k value- Dear All: Again, it is my privilege to have been associated with you. All the best Best wishes and kind regards Subbarao Wunnava

Answer 1

1)

a)generally a character will take 1-byte memory. The array of 80 elements will take 80 bytes continuously allocated memory

b)The decimal value of the given hexadecimal is 2686560

Here is the method to calculate the decimal value:

Hexadecimal Decimal 0 0 4 4 6 6 8 8 剩膨 10 12 13 14 15

now 28FE60:

Replace the alphabets with the given numbers in the table and multiply it with 16 power number position.

(2*16⁵)+(8*16⁴)+(15*16³)+(14*16²)+(6*16¹)+(0*16⁰)=2686560 is the answer

c) The output character sequence will be "FJKLAZU"

The statement "toupper(s[i]-(i*2))" will be performed as follows:

In c, when we try to calculate the difference between a character and integer the compiler will automatically takes the ASCII value of the character(which is a number) and performs the subtraction operation.

Here when the string is "florida"

for i=0 s[i] is f and ASCII of character "f" is 102 & 102-(0*2)=> 102 and result will be converted to upper character because of toupper command and "F" will be the first output string

for i=1 => s[i] = l=> 108-(1*2)=106 => j => toupper(j)=> J

same follows till the character "a".

d)

F:      70      
J:      74      
K:      75      
L:      76      
A:      65      
Z:      90      
U:      85      

This will be the character sequence these are the corresponding ASCII values of the capital letters. After each character has converted to uppercase and we are trying to print the %d of that character the upper case letter ASCII will get printed

Here is the ASCII chart:

8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 888899999999990000000000111111111122222222 B C D E F G H I J K L M N D P Q R S T U + 、--/0123456789一1 1, VI A ? e 7 0000000000000001000000000000000000000000000 0123456789012345678901234567890123456789012 000000000011111111112222222222

e)

 memory[25]=    (10*(25-5)-20)=> 10*20-20=>200-20=>180
 memory[24]=    (10*(24-5)-20)=> 10*19-20=>190-20=>170
 memory[23]=    160
 memory[22]=    150 

 memory[21]=    140
 memory[20]=    130 

The loop will be executed for 5 times for k=25,24,23,22,21,20 and after that k will become 19 and the loop condition k>=20 will fail and loop execution will not be further executed.

The final value of k is 19.