Suggested Practice Exercises

Array and Pointer Exercises

• Deitel, Chapter 4 (page 309)
  Exercises: 4.12, 4.15, 4.20, 4.22, 4.29
   
• Deitel, Chapter 5 (page 384)
  Exercises: 5.9, 5.10, 5.21, 5.30, 5.31, 5.32, 5.39, 5.46, 5.47
   
• Write a function that will take in two C-style strings (null-terminated character arrays) and print them in pure alphabetical order. (Remember, the strcmp function can be used to determine lexicographical order, which is determined by ascii values for characters, but all upper case letters come before all lower case letters in ascii).
   
• Write a function called trim that takes in a C-style string (non-constant -- the function will change the string), and trims off any leading or trailing white space in the string. For example, if the following call is made:

    char str[30] = "     Hello     ";
    trim(str);
  

  The result will be that str now stores the string "Hello".
   
• (These are all different exercises): Write a function that takes in an array of integers and:
  • returns the sum of all the odd numbers in the array
  • returns the number of negative values in the array
  • reverses the order of elements in the array
  • returns the largest value in the array
  • returns the "mode" (i.e. the value that appears the most times) of the array
  • counts up how many values in the array are divisible by 3