Skill Building Exercises

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1. if statements: Write a program that declares two integer variables, a and b, initialized to values of your choice. In this program write ten if statements that use the following conditions:

   (a <= b)

   !(b == a)

   (3 < a) && (3 < b)

   (a || b)

   (((++a) == (--b)) || b)

   (a ^ b)

   ((a && b && (!0)) || true)

   (b == 10)

   (int c = b)

   (a || (!b))

   Disassemble your source code and examine how each if statement and its condition is implemented in assembly.

2. if-else statement: Write a program that declares two char variables, a and b, and initialize them both to ‘ ‘. Write ten if-else statements using the following condition expressions:

   (a = ‘y’)

   (a == ‘Y’)

   (!(b = ‘n’))

   (b == ‘n’)

   (‘c’ <= b)

   ((‘A’ <= a) && (a <= ‘Z’))

   (a == b)

   (a != b)

   ((b >= a) || (a <= ‘1’))

   (a && b && ‘0’)

3. nested if-else statements: Write a program using nested if-else statements that reads character input from the keyboard one character at a time and performs the following operations:

   • if the input is ‘1’ through ‘5’, add 1 to the character value and print the resulting character to the screen,

   • if the input is ‘6’ through ‘9’, add 5 to the character value and print the resulting character to the screen,

   • if the input is ‘a’ through ‘z’, convert to upper case and print to the screen,

   • if the input is ‘A’ through ‘Z’, convert to lower case and print to the screen.

4. switch statement: Rewrite exercise three above using a switch statement.

5. while statement: Add a while statement to the code you wrote in exercise four to repeatedly process keyboard input. Use a sentinel value to terminate the loop.

6. do-while statement: Use do-while statements to calculate the following: Prompt the user for the value of n.

   

   

   

   

7. for statement: Rewrite exercise 6 using for statements.

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