This is for C++, please use Visual Studio and avoid replying with screen shots if possible.

Computer-Assisted Instruction - 50 points

a) The use of computers in education is referred to as computer-assisted instruction (CAI). Write a program that will help an elementary school student learn multiplication. Use the rand function to produce two positive one-digit integers. The program should then prompt the user with a question, such as How much is 6 times 7? The student then inputs the answer. Next, the program checks the students answer. If its correct, display the message "Very good!" and ask another multiplication question. If the answer is wrong, display the message "No. Please try again." and let the student try the same question repeatedly until the student finally gets it right. A separate function should be used to generate each new question. This function should be called once when the application begins execution and each time the user answers the question correctly.

b) (Computer-Assisted Instruction: Reducing Student Fatigue) One problem in CAI environments is student fatigue. This can be reduced by varying the computers responses to hold the students attention. Modify the program of "part a" so that various comments are displayed for each answer as follows: Possible responses to a correct answer:

Very good!

Excellent!

Nice work!

Keep up the good work!

Possible responses to an incorrect answer:

No. Please try again.

Wrong. Try once more.

Don't give up!

No. Keep trying.

Use random-number generation to choose a number from 1 to 4 that will be used to select one of the four appropriate responses to each correct or incorrect answer. Use a switch statement to issue the responses. Use two functions: one for responses to a correct answer and another for responses to an incorrect answer.

c) (Computer-Assisted Instruction: Monitoring Student Performance) More sophisticated computer-assisted instruction systems monitor the students performance over a period of time. The decision to begin a new topic is often based on the students success with previous topics. Modify the program of "part b" to count the number of correct and incorrect responses typed by the student. After the student types 10 answers, your program should use a function to calculate the percentage that are correct. If the percentage is lower than 75%, display "Please ask your teacher for extra help.", then reset the program so another student can try it. If the percentage is 75% or higher, display "Congratulations, you are ready to go to the next level!", then reset the program so another student can try it.

d) (Computer-Assisted Instruction: Difficulty Levels) "part c" developed a computerassisted instruction program to help teach an elementary school student multiplication. Modify the function you create in "part a" to allow the user to enter a difficulty level. At a difficulty level of 1, the program should use only single-digit numbers in the problems; at a difficulty level of 2, numbers as large as two digits, and so on.

e) (Computer-Assisted Instruction: Varying the Types of Problems) Modify the program of "part d" to allow the user to pick a type of arithmetic problem to study. An option of 1 means addition problems only, 2 means subtraction problems only, 3 means multiplication problems only, 4 means division problems only and 5 means a random mixture of all these types.

Extra Credit (Students Performance) 25 points

For research purposes and to better help students, the admissions office of your local university wants to know how well female and male students perform in certain courses. You receive a file that contains female and male student GPAs for certain courses. Due to confidentiality, the letter code f is used for female students and m for male students. Every file entry consists of a letter code followed by a GPA. Each line has one entry. The number of entries in the file is unknown. Write a program that computes and outputs the average GPA for both female and male students. Format your results to two decimal places. Your program should use the following functions:

a. Function openFiles: This function opens the input and output files, and sets the output of the floating-point numbers to two decimal places in a fixed decimal format with a decimal point and trailing zeros.

b. Function initialize: This function initializes variables such as countFemale, countMale, sumFemaleGPA, and sumMaleGPA.

c. Function sumGrades: This function finds the sum of the female and male students GPAs.

d. Function averageGrade: This function finds the average GPA for female and male students.

e. Function printResults: This function outputs the relevant results.

f. There can be no global variables. Use the appropriate parameters to pass information in and out of functions.