Write a function in C++ to print the product of each column of a two dimensional integer array passed as the argument of the function.

                                                    CBSE 2008

Explain : If the two dimensional array contains

         1     2     4

         3     5     6

         4     3     2

         2     1     5

The output should appear as :

Product of Column 1 = 24

Product of Column 2 = 30

Product of Column 3 = 240

                                                                                             

#include<iostream.h>

#include<conio.h>

#define r 10

# define c 10

void ProCol(int a[][], int m , int n) 

// n represents column

// m represents row

{

int pro[n], i, j ;

for(i = 0; i  <  n ; i++)

{

pro[i] = 1;

for(j = 0 ; j  <  m ; j ++)

{

pro[i] = pro[i] * a[j][i];

}

cout << "\n Product of Column 1 : " <<  pro[i];

}

}

void main()

{

int arr[r][c];

int row, col, i, j;

// Input dimension ~

cout <<  "\n Enter row & Column :";

cin >>  row >>  col ;

// Input elements for the array ~

for( i = 0; i <  row ; i++)

for ( j = 0 ; j <  col ; j++)

{

cout << "\n Enter the element for position : "   << i+1 << " , " <<  j+1 ;

cin >>  arr[i][j];

}

// Display the array

for( i = 0;  i < row ; i++ )

{

for( j =0 ; j < col ; j ++)

    cout   <<  arr[i][j]   <<  "  ";

cout  <<   endl;

}

// Calling the function

ProCol(arr, row, col);

getch();

}