Question

(C++ program) Can someone help me with this homework?

Write a function named selectPositive that given a table of n x m integers, copies the elements that are greater than zero ( > 0 ) to a 1D array, column by column. For instance:

int table[MAX_ROW][MAX_COL] =
{
{10, -2, -3, -4, 0, 85},
{-5, -6, 0, 80, -5, 10},
{90, 11, -1, 31, -3, -4},
{41, 51, 6, 71, -7, 19}
};
int n = 4, m = 6;  
int list[MAX_ROW * MAX_COL];

selectPositive(table, n, m, list, k);

After the call list will contain:
{10, 90, 41, 11, 51, 6, 80, 31, 71, 85, 10, 19}

and k = 13, the number of elements copied to list.

Answer 1

Here is the answer..

CODE:

#include<iostream>
using namespace std;
#define MAX_ROW 4
#define MAX_COL 6
int t=0;
int* selectPositive(int table[MAX_ROW][MAX_COL],int n,int m,int list[],int k)
{
   int i,j;
   for(i=0;i<m;i++)
   {
       for(j=0;j<n;j++)
       {
           if(table[j][i]>0)
           {
              
               list[t++]=table[j][i];
               if(t>k)
                   break;
           }
          
       }
   }
  
   return list;
}
int main()
{
  
   int table[MAX_ROW][MAX_COL] = {{10,-2,-3,-4,0,85}, {-5,-6,0,80,-5,10}, {90,11,-1,31,-3,-4}, {41,51,6,71,-7,19}};
   int n = 4, m = 6;
   int k = 13;
   int list[MAX_ROW*MAX_COL];
   int i;
   selectPositive(table,n, m, list,k);
   for(i=0;i<t;i++)
   {
       cout<<list[i]<<"\t";
   }
}

OUTPUT:

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