Write a function in C++ which accepts an integer array and its size as arguments / parameters and assign the elements into a two dimensional array of integers in the following format:

                                                                         CBSE 2006

If the array is 1 2 3 4 5 6

The resultant 2 D array is given below

1 2 3 4 5 6

1 2 3 4 5 0

1 2 3 4 0 0

1 2 3 0 0 0

1 2 0 0 0 0

1 0 0 0 0 0

If the array is 1 2 3

The resultant 2 D array is given below

1 2 3

1 2 0

1 0 0

#include<iostream.h>

#include<conio.h>

void form_matrix(int ar[], int m)

{

// forming the matrix 

int mat[m][m];

int max = m;

int min = 1;

for(int i = 0; i < m ; i++)

{

min= 1;

for(int j = 0; j < m ; j++, min++)

{

if(min < = max )

   mat[i][j] = min;

else

   mat[i][j] = 0;

}

max--;

}

cout<<" \n The matrix :";

// Displaying the matrix

for( i = 0 ; i < m; i++)

{

cout << "\n ";

for( j = 0 ; j< m ; j++)

cout << mat[i][j] << " ";

}

}

void main()

{

int m[10], sz, i, j;

cout<< " \n What is the size of an array ?";

cin >>  sz;

/* for inputing the  elements.....*/

for( i = 0 ; i < sz; i++)

m[i] = i+1;

cout << "\n The array ";

/* display array */

for( i = 0; i < sz ; i++)

cout<< m[i];

 /* call the function */

form_matrix(m, sz);

getch();

}

Write a function REASSIGN() in c++ , which accepts an array of integers and its size as parameters and divide all those array elements by 5 which are divisible by 5 and multiply other array elements by 2

CBSE 2010

#include<iostream.h>

#include<conio.h>

void REASSIGN(int a[], int size)

{

for(int i = 0 ; i < size ; i++)

{

if(a[i]%5 == 0)

  a[i] = a[i] / 5;

else 

   a[i] = a[i] * 2;

}

void main()

{

int arr[25];

int n, i;

cout << "\n Enter the size of an array (<25):":

cin >> n;

for( i = 0 ; i < n ; i++)

{cout<< "\n Enter an element :";

cin >> arr[i];

}

/* Display original array */

cout<< "\n The Original array :";

for(i = 0 ; i < n ; i++)

cout<< arr[i] << " ";

REASSIGN(arr, n);

cout<< "\n The changed array :";

/* Display the changed array */

for(i = 0 ; i < n ; i++)

cout<< arr[i] << " ";

getch();

}