C++:Sum an Array

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You can add the numbers in the array [6,7,29] using a loop.

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Alternatively, you can use the library function accumulate():

#include <iostream>
#include <numeric>
using namespace std;
int main(){
  int a[] = {6,7,29};
  cout << accumulate(a, a+3, 0) << endl;
  return 0;
}