Exercises and Labs Solution

Exercise #2:

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- Modify the scan.c example from my notes so that it

  reads in a double and a long instead of a float and

  an int. Also, initialize the two variables so that

  they do not contain "junk" at the beginning of the

  program.

 

Exercise #3:

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- Write a program to compute the volume of a cylinder.

  Make the result be a floating-point result.

  Choose integer or floating-point for the radius and height.

  Volume is pi times radius squared times height.

Exercise #4:

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- Write a program that reads in and then displays a person's name.

  - Read the first and last name and middle initial and then use

    strcpy and strcat to build output strings.

    - Display the name as "First Initial. Last"

    - And also as "Last, First Initial"

 

    Ex:

         Enter first name: John

         Enter last  name: Doe

         Enter middle initial: H

 

         Name: John H. Doe

         Name: Doe, John H.

 

Exercise #5:

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- In a single program write two loops:

  - A while loop that prints the multiples of 5, from 100

    down to and including 5.

  - A second version that is a for loop.

 {One program, two loops, no input.}

 

Exercise #6:

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- Modify an example to produce 5 random years

  in the current decade (2010-2019.)

Exercise #7:

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- Write a program that reads the length and width of a

  rectangle, and then computes the area of the rectangle.

  Print a label/message that identifies it as the area

  of a rectangle, or as the area of a square (if the

  length and width are equal.)

  {Note: Remember the difference between equality '=='

         and assignment '='.

         - See what happens if you use '=' instead of

           '=='.

         - Use -Wall to see that the compiler warns you

           when using '=' in a boolean/test context.   }

Exercise #8:

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- Modify the example from class to also find

  the largest negative and largest positive number

- Modify the example to also find the smallest

  negative and smallest positive number

 

Exercise #9:

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Write a short program that reads the Standard Input

until EOF and converts all alphabetic characters to

uppercase.

Notes:

       - Don't convert non-alpha characters

       - You only need to convert lowercase

         Characters

 

Exercise #10:

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Modify the cards2.c program to print the

suit and the face value for each card that is displayed.

 

Notes:

       - The cards2.c already indicates a suit and a

         unique value for each card

       - Look at Cards3.c and Cards4.c to see the

         type of output we are looking for (No face

         values are displayed.)

       - You should be able to write a little bit

         of code of your own for cards2.c to print

         like cards3 and cards4, and also print the

         face value; without doing exactly what cards3

         and cards4 do.

 

         Hint: Use some conditional statements

 

Exercise #11:

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- Write a function cardValue() that is passed

  a single integer parameter representing a

  playing card (0-51) and returns the card's

  value in the game of BlackJack.

               2-10: value is 2-10

    Jack/Queen/King: value is 10

                Ace: value is 11 or 1

                     (Ignore 1 for now.)

 

Exercise #12:

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- Write a recursive function printBinary( )

  that displays the binary representation

  of an integer. Use recursion.c and

  recursion2.c as examples.

Exercise #12:

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- Write a recursive function printBinary( )

  that displays the binary representation

  of an integer. Use recursion.c and

  recursion2.c as examples.

 

Exercise #15:

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- Modify the example sort1.c to store and

  sort an array floating-point values. Then

  modify it to sort into ascending order.

  Generate the values to be sorted using

  rand( ).

 

  Notes:

    - Do it in careful, minimal steps:

      - Steps:

        - convert the data to be sorted to

          floating-point

        - change the sort order to

          ascending

        - figure out how to generate a

          random sequence of floating-point

          values using rand()

    - Not all data and variables will need to change,

      counts and indexes are integers regardless of

      the type of data in the array

    - If you get stuck, retreat to the original

      example and try the part that is causing you

      trouble, or just start over.

 

Exercise #16:

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- code a loop that processes a string and converts

  all alphabetic characters to upper case.

 

  Exercise #17:

  ------------

  - Make a 2-D array to represent a Tic-Tac-Toe

    game/grid. Place a couple of 'X's and 'O's

    in the grid and display it.

    - Use the mArray1.c - mArray6.c examples in

      the Supplement.pdf file as a guide.