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

Last update on April 07 2025 12:57:42 (UTC/GMT +8 hours)

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:

For more Practice: Solve these Related Problems:

• Write a C++ program to compute the sum of elements for two 3-element arrays and then output the array with the larger total sum.
• Write a C++ program that reads two arrays of length 3, calculates their sums, and prints the array corresponding to the higher sum.
• Write a C++ program to compare the sum of two fixed-size arrays and output the elements of the array that has the greater aggregate.
• Write a C++ program that computes sums for two 3-element arrays and uses a conditional operator to display the array with the larger sum.

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