Question

Done in C++ using visual studio

1. Write a program with one additional function called int[] reverseArray(int array). This function will receive an array from main and then reverse and should return the reversed array to the main to print out. Use a single array and a single loop, you’re are neither allowed to print out just in reverse order nor allowed to use another array variable to store the original array in reverse order.

2. Write a program which will implement following using 2d array and methods:

a. Function SumLeftDiagonal() will calculate the summation of the elements of right diagonal of the 2d array.

b. Function SumCol() will calculate the summation of every column of the 2d array.

c. Function MaxInRow() will find out the max value of every row of the 2d array.

Sample Output:

The Summation of right diagonal elements is: 17

The Summation of column 1 is: 9

…………………………………………………………………………………

…………………………………………………………………………………

The Maximum value of row 1 is: 7

……………………………………………………………………………………

……………………………………………………………………………………

Answer 1

1)

CODE

#include <iostream>

using namespace std;

int* reverseArray(int arr[], int n) {

for (int low = 0, high = n - 1; low < high; low++, high--) {

    int t = arr[low];

arr[low] = arr[high];

arr[high] = t;

  }

return arr;

}

void display(int arr[], int n)

{

  for (int i = 0; i < n; i++) {

    cout << arr[i] << " ";

  }

}

int main() {

int arr[] = {10, 20, 30, 40, 50, 60};

  int n = sizeof(arr)/sizeof(arr[0]);

int *res;

  res = reverseArray(arr, n);

  display(res, n);

  return 0;

}

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