Array

#include <iostream>
#include <fstream>

using namespace std;

int main()
{
    int i, j;
    char id[10][5], studentAns[10][10];
    float totalMarks[10] = {0};
    char trueAnswer[10] = { 'A','C','D','A','A','B','B','D','C','D' };

    ifstream answerFile("studAnswers.txt"); //start read

    if(!answerFile) //check file availability
    {
        cout << "File \"studAnswers.txt\" not found!";
        return 0;
    }

    for(i=0; i<10; i++) //process read
    {
        answerFile >> id[i];
        for(j=0; j<10; j++)
            answerFile >> studentAns[i][j];
    }

    answerFile.close(); //end read

    ofstream resultFile("studResult.txt"); //start write

    for(i=0; i<10; i++) //process write
    {
        resultFile << id[i];
        for(j=0; j<10; j++)
        {
            if( studentAns[i][j] == trueAnswer[j] )
            {
                resultFile << " T ";
                totalMarks[i] ++;
            }
            else
                resultFile << " F ";
        }

        resultFile << "Marks: " << totalMarks[i]/10*5 << "%" << "\n";
    }

    resultFile.close(); //end write

    cout << "Output printed in \"studResult.txt\"";
    return 0;
}