{x = Y} X+ 2 *Y Y + 2 * X X + 2 * Y {x = Y}
Control structures
Control structures are block of statements that analyze the value of variables and determine the flow of execution based on those values. When a program is running, the CPU executes the code line by line. After sometime, the program reaches the point where it has to make a decision on whether it has to go to another part of the code or repeat execution of certain part of the code. These results affect the flow of the program's code and these are called control structures.
Switch Statement
The switch statement is a key feature that is used by the programmers a lot in the world of programming and coding, as well as in information technology in general. The switch statement is a selection control mechanism that allows the variable value to change the order of the individual statements in the software execution via search.
please send answer Q3 for part b iii
please send proper answer
![3. (a) Explain the notation {Pre} Code {Post}. Explain in your answer the difference
between total and partial correctness.
(b) Which of the following statements are true? In each case you should justify your
argument informally.
X + X* 2
i. {x > Y}
{ x - Y > 0}
Y +Y div 2
ii. {x is even}
X + X +1
X + 2 * X
{x is odd}
X + 2 * Y
iii. {x = Y}
{x = Y}
Y + 2 * X
(c) A palindromic number is a number that is the same if read forwards or
backwards: 12321 and 641146 are examples. It is possible to represent a
number using an array of digits (numbers 0 - 9), for example: [1,9, 5, 2] could
represent 1952.
i. Using an appropriate iteration construct, write an algorithm as a procedure
that decides if an input array A[1...n] of digits is a palindromic number.
ii. Repeat question (i) but write your algorithm as a recursive procedure. Show
how your algorithm works by giving a trace of the computation with the array
[1, 2, 2, 1).](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F62448a35-ad06-4db8-ba7d-9176b3d71047%2Ffd07a0bb-9977-42cd-8cc7-e4534082ec23%2F3z9bw4p_processed.jpeg&w=3840&q=75)
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