C++ Exercises: Compute the sum of the two given arrays of integers, length 3 and find the array which has the largest sum

C++ Basic Algorithm: Exercise-93 with Solution

Sum Two Arrays and Find Larger

Write a C++ program to compute the sum of the two given arrays of integers, length 3 and find the array that has the largest sum.

Sample Solution:

C++ Code :

#include <iostream>  // Including input-output stream header file

using namespace std;  // Using standard namespace

static int *test(int nums1[], int nums2[])  // Function definition that compares sums of two arrays
{
    return nums1[0] + nums1[1] + nums1[2] >= nums2[0] + nums2[1] + nums2[2] ? nums1 : nums2;  // Returns pointer to the array with the larger sum
}

int main () {
   int *p;  // Declaring pointer variable p
   int nums1[] = { 1, 5, 7 };  // Initializing array nums1 with values
   int nums2[] = { 1, 5, 3 };  // Initializing array nums2 with values
   int arr_length = sizeof(nums1) / sizeof(nums1[0]);  // Calculating length of array nums1

   p =  test(nums1, nums2);  // Calling the test function and storing the returned pointer in p

   cout << "\nNew array: " << endl;  // Printing a message

   for ( int i = 0; i < arr_length; i++ ) {  // Loop to print elements of the array pointed by p
      cout << *(p + i) << " ";  // Printing elements of the array pointed by p
   } 

   return 0;  // Returning 0 to indicate successful completion of the program
}

Sample Output:

New array:
1 5 7

Visual Presentation:

Flowchart:

C++ Code Editor:

Contribute your code and comments through Disqus.

Previous: Write a C++ program to check a given array of integers, length 3 and create a new array. If there is a 5 in the given array immediately followed by a 7 then set 7 to 1.
Next: Write a C++ program to create an array taking two middle elements from a given array of integers of length even.