Question

Using C++

1. Driver's The local driver's license office has asked you to create an application that grades the written portion of the driver's license exam. The exam has 20 multiple-choice questions. Here are the correct answers 16. C 17.С 18. B 19. D 20. A 1. B 2. D 3. A 12. C 13. D 14. A 15. D 7.В 9.С 10. D 5. С Your program should store these correct answers in an array. It should ask the user to enter the student's answers for each of the 20 questions, and the answers should be stored iin another array. After the student's answer have been entered, the program should display a message indicating whether the student passed or failed the exam. (A student must correctly answer 15 of the 20 questions to pass the exam). It should then display the total number of correctly answered questions, the total number of incorrectly answered questions, and a list showing the question numbers of the incorrectly answered questions.

Answer 1

#include <iostream>
using namespace std;
char* Correct_Ans=new char[20];
int main()
{
int index=0;
int student;
int total_marks=0;
cout<<"enter correct for 20 questions\n";
for(;index<20;index++)
cin>>Correct_Ans[index];
cout<<"enter number of students available for exam\n";
cin>>student;
char* Student_Ans[student];
string inc_ans;
//program is assuming student will enter all the answers,no empty answers and all answers are in upper case only
for(index=0;index<student;index++)
{ total_marks=0;
cout<<"enter student "<<index+1<<" answers for all questions\n";
Student_Ans[index]=new char[20];
inc_ans="";
for(int i=0;i<20;i++)
{   
cin>>Student_Ans[index][i];
if(Correct_Ans[i]==Student_Ans[index][i])
total_marks++;
else
{
string str=to_string(i+1);
inc_ans.append(str+" ");
}
}
if(total_marks>=15)
cout<<"student passed in the exam\n";
else
cout<<"student failed in the exam\n";
  
cout<<"Total number of correct answered is ="<<total_marks<<"\nTotal number of wrong answered is ="
<<20-total_marks<<" \nand wrong answer questions are ="<< inc_ans<<endl;
}
  
}

#input:

A
B
C
D
A
B
C
D
A
B
C
D
A
B
C
D
A
B
C
D
1
A
A
A
A
A
B
C
C
A
A
A
A
A
B
C
C
A
B
C
D

#output:

Your Code's Output

enter correct for 20 questions
enter number of students available for exam
enter student 1 answers for all questions
student failed in the exam
Total number of correct answered is =12
Total number of wrong answered is =8 
and wrong answer questions are =2 3 4 8 10 11 12 16