Storing the sum of 2 arrays in another array

Question

help please

Answer 1

Do you want to sum array1[x] + array2[x] into array3[x], or sum all elements of array1 + sum all elements of array2 then store the value in array3?

Answer 2

@Mich, this is what I figured of the case, as you tagged vector, and at the moment I'm learning how to use it, I included a vector version too. I hope I understood what you mean correctly.

#include <iostream>
#include <vector>
using namespace std;

int main()
{
// *** Using array ***
int array1[] {15,25,35,45,55}, array2[] {100,200,300,400,500}, array3[5];

for(unsigned int i = 0; i < 5; i++)
array3[i] = array1[i] + array2[i];

cout << "Sum 2 arrays:\n";
for(unsigned int i = 0; i < 5; i++)
cout << array3[i] << " ";
cout << "\n\n";

// *** Using vector ***
vector<int> v1 = {10,20,30,40,50}, v2 = {100,200,300,400,500}, v3;

for(unsigned int i = 0; i < v1.size(); i++)
v3.push_back(v1.at(i) + v2.at(i));

cout << "Sum 2 vectors:\n";
vector<int>::iterator it;
for(it = v3.begin(); it != v3.end(); it++)
cout << *it << " ";
return 0;
}

Hth, cmiiw

Answer 3

the first one you suggested