Question

Please put the outputs with it also I want to make sure it runs thanks

Project-Computer-Assisted Instruction (50 points) use of computers in education is referred to as computer-assisted instruction (CAl) should then Writ e a program that will help an elementary school student learn multiplication. Use the rand function to produce two positive one-digit integers. The program 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 student's answer it's 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. One problem in CAl environments is student fatigue. This can be reduced by varying the computer's responses to hold the student's attention. Modify the program of "part a" so that various comments are displayed for each answer as follows: Possible responses to a correct answer: If b) 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 toa correct answer and another for responses to an incorrect answer More sophisticated computer-assisted instruction systems monitor the student's performance over a period of time. The decision to begin a new topic is often based on the student's 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 levell", then reset the c) program so another student can try it. d) Part c" developed a computer-assisted instruction program to help teach an elementary school student multiplication. Modify the function you create in "part a" to allow the

Answer 1

Here is the program in C. Let me know in the comment if you need help understanding the problem or if you face any errors.

Program

#include<stdio.h>
#include<stdlib.h>
#include<math.h>

int rightAnswers = 0;
int wrongAnswers = 0;

int getNumber(int difficultyLevel)
{
// we don't want to generate number 0. ( in case of divisions)
// hence this check.
int number = 0;
do
{
number = rand() % (int)pow(10, difficultyLevel);
}while(number == 0);
return number;
}

int getRandomNumberBetweenRange(int start, int end)
{
return (rand() % (end - start + 1)) + start;
}

void printCorrectAnswer()
{
const static char message[][40] = {"Very good!", "Excellent!", "Nice Work!", "Keep the good work!"};
int messageIndex = getRandomNumberBetweenRange(0,3);
printf("%s", message[messageIndex]);
rightAnswers++;
}

void printWrongAnswer()
{
const static char message[][40] = {"No. Please try again.", "Wrong. Try once more.", "Don't give up!", "No. Keep trying"};
int messageIndex = getRandomNumberBetweenRange(0,3);
printf("%s", message[messageIndex]);
wrongAnswers++;
}

// PRE:
// questionType between 1 to 5.
// difficultyLevel between 1 to 3.
void getQuestion(int questionType, int difficultyLevel)
{
int firstNumber = getNumber(difficultyLevel);
int secondNumber = getNumber(difficultyLevel);
  
if(questionType == 5) questionType = getRandomNumberBetweenRange(1,4);
  
char op = ' ';
do
{
switch(questionType)
{
case 1: op = '+'; break;
case 2: op = '-'; break;
case 3: op = '*'; break;
case 4: op = '/'; break;
}
  
printf("\nHow much is %d %c %d? ", firstNumber, op, secondNumber);
double studentAnswer = 0, answer = 0;
scanf("%lf", &studentAnswer);
  
switch(questionType)
{
case 1: answer = firstNumber + secondNumber; break;
case 2: answer = firstNumber - secondNumber; break;
case 3: answer = firstNumber * secondNumber; break;
case 4: answer = (double)firstNumber / secondNumber; break;
}
  
if(questionType == 4)
{
if(abs(answer-studentAnswer) < 0.01)
{
printCorrectAnswer();
break;
}
else
{
printWrongAnswer();
}
}
else
{
if(studentAnswer == answer)
{
printCorrectAnswer();
break;
}
else
{
printWrongAnswer();
}
}
}while(1);
}

int main()
{
int questionsCount = 0;
  
do
{
printf("\n1. Addition problems\n2. Subtraction problems \n3. Multiplication problems\n4. Division problems\n5. Mixed\n6. Terminate");
  
int problemType = 0;
do
{
printf("\nPick your problem (1 to 5) or 6 to terminate: ");
scanf("%d", &problemType);
  
if(problemType == 6) return 0; // terminate the program.
  
if(problemType < 1 && problemType > 5)
{
printf("That's an invalid input.");
}
else break;
}while(1);
  
  
int difficultyLevel = 0;
do
{
// lets limit to 3 levels.
printf("\nEnter difficulty level (1 to 3): ");
scanf("%d", &difficultyLevel);
if(difficultyLevel < 1 && difficultyLevel > 3)
{
printf("That's an invalid input.");
}
else break;
}while(1);
  
  
while(questionsCount < 10)
{
getQuestion(problemType, difficultyLevel);
questionsCount++;
}
  
int totalAnswers = rightAnswers + wrongAnswers;
if((float)rightAnswers / totalAnswers < 0.75)
{
printf("\nPlease ask your teacher for extra help.");
}
else
{
printf("\nCongratulations you are ready to go to the next level");
}
questionsCount = 0;
rightAnswers = 0;
wrongAnswers = 0;
}while(1);
  
return 0;
}

Sample output: