Solved Homework: Question: Please help with c+ program use only c+ and codeblocks. A multiple-choice examination consists of…

C++ Program

#include<iostream>
#include<string>
#include<fstream>
using namespace std;
int main ()
{
string line;
int marks=0;
int numberofcorrectresponses[20]={0};
/*array (initialised to 0) to record number of correct responses to a particular question*/
cout<<“*******MCQ STUDENT EXAM REPORT*******”;
cout<<endl<<“Student number Mark”<<endl;
ifstream myfile (“exam.txt”);
if (myfile.is_open())
{
getline (myfile,line); /*getline gets one line of the file. If used again, it gets next line*/
string correctkey=line; /*here ‘line’ is the first line of text file*/
getline (myfile,line);
int numberofpapers=0;
do
{
for(int i=5; i<25; i++)
{
if(correctkey[i-5]==line[i])
{
marks=marks+4;
numberofcorrectresponses[i-5]++;
}
else if(line[i]==’X’);
else
marks–;
}
cout<<” “<<line[0]<<line[1]<<line[2]<<line[3]<<” “<<marks<<endl;
marks=0;
numberofpapers++;
getline (myfile,line);
}while(int(line[0])!=48); /*int(c) gives ASCII value of c, 48 is ASCII value of 0*/
cout<<endl<<“Total number of examinations marked : “<<numberofpapers;
cout<<endl<<“Number of correct responses for each question:”<<endl;
cout<<“Question: “;
for(int i=1; i<11; i++)
cout<<i<<” “;
cout<<endl<<“#correct: “;
for(int i=0; i<10; i++)
cout<<numberofcorrectresponses[i]<<” “;
cout<<endl<<“Question: “;
for(int i=11; i<21; i++)
cout<<i<<” “;
cout<<endl<<“#correct: “;
for(int i=10; i<20; i++)
cout<<numberofcorrectresponses[i]<<” “;
myfile.close();
}
else
cout<<“There is no file exam.txt”;

return 0;
}

Input

Output