ECE 10 Homework 4 Due Week 5

(50 points) CharCounter II: Write a program that counts occurances of each character in the input. Note this is different than counting classes (categories) of characters, because we want to know how many times each specific character appeared in the input. For control characters (those that are not printable) print the ascii code in angle brackets. The output should look something like the following:
```
Char	Frequency
<32>	40
<33>	0
...
<41>	2
...
'A'		10
'B'		3
...
'a'		3
'b'		4
...
<127>   0
```
Design Sketch: You will need one counter for each character and there are 128 valid character values in ASCII. Characters, as ASCII codes, may be used to index into an array, so using an array of counters will work well. Declare a global counter array with 128 integer counters. Write the following functions:
```
void initializeCountersToValue(int counterArray[], int value);
void incrementCounterForCharacter(int counterArray[], char ch);
void reportTotals(int counterArray[]);
```

Main should, 1) declare the array, 2) initialize the array elements to zero, 3) loop though the input characters and increment the counter corresponding to each character seen, and 4) report the total seen for each character. Here is a start on the main that will read all characters in the input (you may use it for inspiration, but don't cut and paste without typing it in):

 #include <iostream.h>
void printInstructions()
{
  cout << "Enter a bunch of text for counting.\n";
  cout << "Type <ctrl-z> when done to indicate the end-of-file.\n";
}
int main()
{
  // declare your array characterFrequencyArray
  initializeCountersToValue(characterFrequencyArray, 0);
  printInstructions();
  for ( char ch; cin.get(ch); )
    incrementCounterForCharacter(characterFrequencyArray, ch);
  reportTotals(characterFrequencyArray);
  return 0;
}

Test Input: Again use this homework assignment as the test input.
(50 points) Quiz Grade Calculator II: Write a program to compute the course score and grade for a student in this class. There are nine homeworks, six quizzes, and one final exam. Your program should read all the scores for homeworks, quizzes and final exam and then output the course score and the course grade assuming the scale and rules from the previous homework, e.g., homeworks all count and are 30%, lowest quiz is dropped and count 40%, and final is 30%. A+ is 99-100, A is 92-98, etc.

Design Sketch: You will need two arrays: one for the quizzes, and another for the homeworks. Write the following functions:

void readQuizScoresFromUser(int quizzes[]);
void readHomeworkScoresFromUser(int homeworks[]);
int readFinalExamSoreFromUser();
int computeCourseScore(int quizzes[], int homeworks[], int finalExam);
void printCourseGrade(ostream & out, int courseScore);

Write main to use these functions appropriately. It should declare both the arrays for homeworks and quizzes as well as a variable for the final exam score. The rest should be obvious from the functions you will write above. You MUST call these functions when appropriate. We won't give credit for low-level repeating of code.
What to submit:
- the source code for your programs
- a sample session showing your test runs using the inputs we suggested as well as test cases you have used on your own
- be sure to give meaningful names to all constants you use.