BITAC_AME_Written (29.01.2021 - BUET)

Question: you have two files containing the marks of the written and practical exam of some students. Currently, The marks are in 100 but the final weight for the written  part is 60 and for the practical part 40. you need to combine the marks and rank them based on the total marks. see the sample I/O for clarification.

Written.txt	Practical.txt
4	4
1505003     41	1505004      72
1505001     59	1505001      80
1505002      65	1505003      56
1505004      84	1505002      78

Rank.txt

Rank           ID               Marks

1           1505004          79.2

2           1505002          70.2

3           1505001          67.4

4           1505003          47.0

                                    

 

Solution: 

#include<bits/stdc++.h>

using namespace std;

int main()

{

    ifstream input_written, input_practical;

    int roll_written1[100], mark_written1[100], roll_practical1[100], mark_practical1[100];

    int i=0, j=0;

    double final_marks[100];

    input_written.open("written.txt.txt");

    input_practical.open("practical.txt.txt");

    while(!input_written.eof())

    {

        int number=0, number1=0;

        input_written>>number;

        input_practical>>number1;

        for(int z=0; z<number; z++)

        {

            int roll, mark, roll_practical, mark_practical;

            input_written>>roll>>mark;

            input_practical>>roll_practical>>mark_practical;

            roll_written1[i] = roll;

            mark_written1[i] = mark;

            roll_practical1[j] = roll_practical;

            mark_practical1[j] = mark_practical;

            i++;

            j++;

        }

    }

    ofstream output;

    output.open("rank.txt");

    output<<"Rank"<<"       "<<"ID"<<"       "<<"Marks"<<"\n";

    for(int k = 0; k<i; k++)

    {

        for(int l=0; l<i; l++)

        {

            if(roll_practical1[l] == roll_written1[k])

            {

                final_marks[k] = ( ((double)mark_written1[k]*60)/100 ) + ( ((double)mark_practical1[l]*40)/100 );

            }

        }

    }

    for(int n=0; n<i-1; n++)

    {

        for(int o=n+1; o<i; o++)

        {

            if(final_marks[n] < final_marks[o])

            {

                swap(final_marks[n], final_marks[o]);

                swap(roll_written1[n], roll_written1[o]);

            }

        }

    }

    for(int p = 0; p<i; p++)

    {

        output<<" "<<p+1<<"       "<<roll_written1[p]<<"       "<<final_marks[p]<<endl;

        cout<<" "<<p+1<<"       "<<roll_written1[p]<<"       "<<final_marks[p]<<endl;

    }

    output.close();

    input_written.close();

    input_practical.close();

}