Question

C++

Look the source code and,

1. the function findMaxVisits is empty and one of its parameters does not behave as it should. supply the missing statements and repair the damaged parameter. do not use any non-local constants or variables.

2. the fill function has some errors. repair the function without changing its parameter list. do not use any non-local constants or variables.

3. the show function has some errors. repair the function without changing its parameter list. One error is a compiler error and one error is a subtle logic error that affects the appearance of the function's output. repair the function without changing its parameter list. do not use any non-local constants or variables.

4. the main function has one and only one logic error. find the error and fix the error.

#include <ctime>

#include <fstream>

#include <iomanip>

#include <iostream>

#include <random>

#include <string>

//standard library declarations

using namespace std;

int findMaxVisits(int a[], int size, int maxrow)

{

/*

the function returns the maximum element in the array and the position of the maximum elements in the array

use a return statement to return the maximum element in the array

use maxrow to return the position of the maximum element in the arrray.

*/

}

void show(int a[], int size, int fieldwidth)

{

   for (int row = 0; row < M; row++)

       cout << a[row];

   cout << endl;

}

void fill(int a[], int size, int fillvalue)

{

   for (int row = 0; row < M; row++)

       a[row] = fillvalue;

}

const int M = 16;

default_random_engine e(static_cast<unsigned>(time(NULL)));

uniform_int_distribution<int> uM(0, M - 1);

int main()

{

   int visits[M];

   fill(visits, M, 0);

   int nvisits = 0;

   int maxrow;

   int nunvisited = M;

   int oldrow = uM(e);

  

   visits[oldrow]++;

   nvisits++;

   nunvisited--;

   cout << "number of visits: " << nvisits << " number of unvisited " << nunvisited << endl;

   int maxvisits = findMaxVisits(visits, M, maxrow);

   cout << "max visits: " << maxvisits << endl;

   show(visits, M, to_string(maxvisits).length() + 1);

   system("pause");

   system("cls");

   while(nunvisited > 0)

   {

       int newrow = uM(e);

       visits[newrow]++;

       nvisits++;

       cout << "number of visits: " << nvisits << " number of unvisited " << nunvisited << endl;

       maxvisits = findMaxVisits(visits, M, maxrow);

       cout << "max visits: " << maxvisits << endl;

       show(visits, M, to_string(maxvisits).length() + 1);

       system("pause");

       system("cls");

       nunvisited--;

       oldrow = newrow;

   }

   cout << "number of visits: " << nvisits << " number of unvisited " << nunvisited << endl;

   maxvisits = findMaxVisits(visits, M, maxrow);

   cout << "max visits: " << maxvisits << endl;

   show(visits, M, to_string(maxvisits).length() + 1);

   system("pause");

   return 0;

}

Answer 1

#include <ctime>
#include <fstream>
#include <iomanip>
#include <iostream>
#include <random>
#include <string>

//standard library declarations
using namespace std;

int findMaxVisits(int a[], int size, int &maxrow) {

    int max = a[0];
    maxrow = 0;
    for(int i=1; i<size; i++) {
        if(a[i] > max) {
            max = a[i];
            maxrow = i;
        }
    }

    return max;
}

void show(int a[], int size, int fieldwidth) {
   for (int row = 0; row < size; row++)
       cout << setw(fieldwidth) << a[row];
   cout << endl;
}

void fill(int a[], int size, int fillvalue) {
   for (int row = 0; row < size; row++)
       a[row] = fillvalue;
}

const int M = 16;

default_random_engine e(static_cast<unsigned>(time(NULL)));
uniform_int_distribution<int> uM(0, M - 1);

int main() {

   int visits[M];
   fill(visits, M, 0);

   int nvisits = 0;
   int maxrow;
   int nunvisited = M;
   int oldrow = uM(e);

   visits[oldrow]++;
   nvisits++;
   nunvisited--;

   cout << "number of visits: " << nvisits << " number of unvisited " << nunvisited << endl;

   int maxvisits = findMaxVisits(visits, M, maxrow);
   cout << "max visits: " << maxvisits << endl;
   show(visits, M, to_string(maxvisits).length() + 1);

   //system("pause");
   //system("cls");

   while(nunvisited > 0)  {
       int newrow = uM(e);

       visits[newrow]++;
       nvisits++;
       nunvisited--;

       cout << "number of visits: " << nvisits << " number of unvisited " << nunvisited << endl;

       maxvisits = findMaxVisits(visits, M, maxrow);
       cout << "max visits: " << maxvisits << endl;

       show(visits, M, to_string(maxvisits).length() + 1);

    //system("pause");
    //system("cls");

       oldrow = newrow;
   }

   cout << "number of visits: " << nvisits << " number of unvisited " << nunvisited << endl;

   maxvisits = findMaxVisits(visits, M, maxrow);

   cout << "max visits: " << maxvisits << endl;

   show(visits, M, to_string(maxvisits).length() + 1);

   //system("pause");

   return 0;

}

Please upvote, as i have given the exact answer as asked in question. Still in case of any concerns in code, let me know in comments. Thanks!