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
Write a C++ program to compute the sum of the two given arrays of integers, length 3 and find the array which has the largest sum.
Sample Solution:
C++ Code :
#include <iostream>
using namespace std;
static int *test(int nums1[], int nums2[])
{
return nums1[0] + nums1[1] + nums1[2] >= nums2[0] + nums2[1] + nums2[2] ? nums1 : nums2;
}
int main () {
int *p;
int nums1[] = { 1, 5, 7 };
int nums2[] = { 1, 5, 3 };
int arr_length = sizeof(nums1) / sizeof(nums1[0]);
p = test(nums1, nums2);
cout << "\nNew array: " << endl;
for ( int i = 0; i < arr_length; i++ ) {
cout << *(p + i) << " ";
}
return 0;
}
Sample Output:
New array: 1 5 7
Pictorial 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.
What is the difficulty level of this exercise?
C++ Programming: Tips of the Day
What is the usefulness of `enable_shared_from_this?
It enables you to get a valid shared_ptr instance to this, when all you have is this. Without it, you would have no way of getting a shared_ptr to this, unless you already had one as a member.
class Y: public enable_shared_from_this{ public: shared_ptr f() { return shared_from_this(); } } int main() { shared_ptr p(new Y); shared_ptr q = p->f(); assert(p == q); assert(!(p < q || q < p)); // p and q must share ownership }
The method f() returns a valid shared_ptr, even though it had no member instance. Note that you cannot simply do this:
class Y: public enable_shared_from_this{ public: shared_ptr f() { return shared_ptr (this); } }
The shared pointer that this returned will have a different reference count from the "proper" one, and one of them will end up losing and holding a dangling reference when the object is deleted.
Ref : https://bit.ly/3pwVzzz
- Weekly Trends
- Java Basic Programming Exercises
- SQL Subqueries
- Adventureworks Database Exercises
- C# Sharp Basic Exercises
- SQL COUNT() with distinct
- JavaScript String Exercises
- JavaScript HTML Form Validation
- Java Collection Exercises
- SQL COUNT() function
- SQL Inner Join
- JavaScript functions Exercises
- Python Tutorial
- Python Array Exercises
- SQL Cross Join
- C# Sharp Array Exercises