Question

Using C++ programming

Write a program that compares a student’s answers in a 5-question quiz to the teacher’s answer key.

The answer key is: {'C', 'D', 'B', 'B', 'A'}

You MUST use TWO functions: One for input and the other for comparing/output. The output is simply the # of questions answered correctly. This program will test your ability to handle parallel arrays.

Output:

Look at the questions and choices on page 999 of your textbook.

Enter the UPPERCASE letter of your choice for each question when prompted below.

Enter your response for Question 1: [user types: a]

Enter your response for Question 2: [user types: D]

Enter your response for Question 3: [user types: B]

Enter your response for Question 4: [user types: b]

Enter your response for Question 5: [user types: A]

You answered 4 out of 5 questions correctly

Notes and Hints:

1) You must accept both upper and lower case responses from the student

2) The only things in main() are the constant, arrays, introductory output, and two function calls

Answer 1

Code:

#include<iostream>

#include<string.h>

using namespace std;

char* input_student_key() //function for taking input student key

   {

       char student_key[5]; //student key array

       int i;

       for(i=0;i<5;i++) //iterate loop to take the key values

           {

               cout << "Enter your response for Question " << i+1 << ": ";

               cin >> student_key[i];

               if(student_key[i]>='a' && student_key[i]<='z') //check if the key is lower case then convert to upper

           {

           student_key[i] -= 32;

           }

           }

       return student_key; //finally return the student key

   }

int compare_keys(char* teachers_key,char* student_key) //function used to compare the keys

   {

   int i,count=0;

   for (i=0;i<5;i++) //iterate over loop

       {

       if (teachers_key[i]==student_key[i]) //check the teacher key value equals to student key

           {

           count++; //if yes increment the value

           }  

       }

   return count;       //finally return the count

   }

int main()

{

   char teachers_key[]={'C','D','B','B','A'}; //teachers key decalration

   char *student_key=input_student_key();   //calling input function and storing results

   int results_count=compare_keys(teachers_key,student_key); //calling compare function and stroing returned result

   cout << "You answered " << results_count << " out of 5 questions correctly."; //finally printing the number of correct answers count

   return 0;

}

Code and Output Screenshots:

#include<iostream> #include<string.h> using namespace std; char* input_student_key() 1/function for taking input student key char student_key[5]; // student key array int i; for(i=0;i<5; i++) I/iterate Loop to take the key values cout << "Enter your response for Question " << i+1 << ": "; cin >> student_key[i]; if (student_key[i]>='a' && student_key[i]<='z') //check if the key is Lower case then convert to upper student_key[i] -= 32; return student_key; //finally return the student key int compare_keys (char* teachers_key, char* student_key) 1/function used to compare the keys int i,count=0; for (i=0;i< 5; i++) //iterate over Loop if (teachers_key[i]==student_key[i]) //check the teacher key value equals to student key count++; //if yes increment the value return count; //finally return the count int main() char teachers_key[ ]={'C', 'D', 'B','B','A'}; //teachers key decalration char *student_key=input_student_key(); // calling input function and storing results int results_count=compare_keys(teachers_key, student_key); // calling compare function and stroing returned result cout << "You answered " << results_count << " out of 5 questions correctly."; //finally printing the number of correct answers count return 0; A TA

Enter your response for Question 1: a Enter your response for Question 2: D Enter your response for Question 3: B Enter your response for Question 4: b Enter your response for Question 5: A You answered 4 out of 5 questions correctly.

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