C programming Midterm

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Im just too far behind so I need help.

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C Programming Midterm Directions: This is the midterm for the C Programming Class. Answer electronically the questions and submit them into BlackBoard Learn by the Due Date. Answer all questions and follow the rules below. Please attach one single text file (not Word or other formats) with all your answers. - Name your submitted file using the following format: [Your Last Name]_midterm.txt ... so if you last name was Jones, your submitted file would be called: Jones_midterm.txt Do not send multiple files! I just need the answer ... do not send program output, only the C source code ... and again, all in one single text file. Understand that if I ask for a function, all I am looking for is that function in your answer ... not a complete program that includes a main function ... I just need to see your function as the answer. If I ask for a program, then I am looking for a main function that calls one or more functions (include the functions). If I ask for a code segment, then all I am looking for is just the code needed to answer the question. Rules: 1. 2. 3. 4. 5. 6. You many use your book and notes Quality, Re-usability, Maintainability, Readability, and Efficient code will be stressed in addition to correctness. Same rules and standards apply as your homework assignments (comments, headers, style, ...) Use your computer to compile your code and test it out Don't converse with other students or friends Contact me if you have questions or state your assumptions Questions: 1) Use the link below for the background needed to create two functions that work with a Trapezoid http://www.mathsisfun.com/geometry/trapezoid.html a) Write a function that will return the area of a trapezoid b) Write a function that will return the perimeter of a trapezoid 2) Write a function int frequency (int theArray [ ], int n, int x) that counts the number of times the item x appears among the first n elements of theArray and returns that count as the frequency of x in theArray. Use integers for everything! For example, if the array being passed contained the values 5, 7, 23, 8, 23, 67, 23 ... and n was 7 and x was 23, then it would return a value of 3 since 23 occurs 3 times within the first 7 elements of the array. 3a) (Function) Represent the mathematical operation: max (x, y, w, z) as a C function. This is, write a function that is passed 4 integer values that returns the largest value of those four parameters. For example, max (5, 2, 4, 1) would return 5 since it is the largest value of the four parameters. 3b) (Code Segment) Rewrite the mathematical operation: operator. For example, max (x, y) would be: max (x, y, w, z) as a single statement using the conditional expression max = (x > y) ? x : y; Hint: You will have more than one conditional expression operator (?) in your answer, and it would help to use boolean logic operations that were covered in Week 3. 4) Given the following test scores and grade equivalents, write a function which is passed a score, and returns a letter grade based on the score entered. It should also check for invalid values (a number less than 0 or greater than 100). Score -----90-100 80-89 70-79 60-69 Grade ----A B C D 0 -59 F 5) Write a function that is passed an array of characters containing letter grades from our previous question, and prints a report that shows the total number of occurrences of each letter grade. Your function should accept both lower and upper case grades, for example, both 'b' and 'B' should be bucketed into your running total for B grades. Any grade that is invalid should be bucketed as a grade of 'I' for Incomplete. You must use a switch statement, and your function should accept an array of any size. Feel free to pass in the array size as parameter so you know how many grades you'll need to check in your loop. For example, if you passed a function the following array: char grades [ ] = {'A', 'b', 'C', 'x', 'D', 'c', 'F', 'B', 'Y', 'B', 'B', 'A'}; It would print: Grade ----A B C D F I Total ----2 4 2 1 1 2 6) Write a program that contains a main function and three other functions that will return various attribute information about an array of floating point numbers: array_sum - total sum of all array elements array_avg - average of all array elements array_min - the smallest number of the array elements The main function should print the values returned from each function at the end of the program. 7) Write a function that raises an integer to a positive integer power. Call the function x_to_the_n, taking two integer arguments x and n. Have the function return a long int, which represents the results of calculating x to the nth power. Do not use the C pow library function. Example: NOTE: if x = 3 and n = 2, the function would return 9. Do not use recursion (since that version is in your lecture notes). 8) (Code Segment) The Federation has asked you to develop a program to keep track of its officers. A sample of the kind of information for each officer is shown below. Name: Mr. James Tiberius Kirk Date of Birth: March 22, 2233 Address: 23 Falling Rock, Riverside, Iowa 52327-0021 Planet Earth Rank: Captain Ship: USS Enterprise Nickname: Jim Starfleet ID: 02341232 Hourly Pay: 456.78 Favorite Saying: "Bones???" Starting Stardate: 41153.7 Martial Status: Single Starfleet Graduation Date: June 23, 2212 Name: Mr. Leonard A. McCoy Jr. Date of Birth: 7/8/2227 Address: 8745 South Road Jackson, Mississippi 09201-0001 Planet Earth Rank: Chief Medical Officer Ship: USS Enterprise Nickname: Bones Starfleet ID: 00034212 Hourly Pay: 234.56 Favorite Saying: "He's dead Jim." Starting Stardate: 41151.8 Marital Status: Divorced Starfleet Graduation Date: June 21, 2210 Provide the code need to DECLARE an array of structures given the above information. Don't write a program and don't worry about initializing the structure based on the information above. Be careful on how you declare the members of a structure. Grading will be based on how the flexibility of your design (i.e., define many structures and have structures within structures if necessary). Note: Don't go overboard such as having a structure with only one member just to create many structures. 9) What compiler do you use in this class? Your Compiler: 4 Likes and/or Dislikes: 1) 2) 3) 4) Give me four things you like and/or dislike about our compiler ... any combination will work.
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1a.
float trapezoidArea(float base1, float base2, float height)
{
return ((base1 + base2)*height)/2;
}
1b.
float trapezoidPe...


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