2d array with range-based for statement

[medosz]

I am trying to set each of the element to zero in the 2 dimension array with a nested range-based for statement. I am missing something because it does not set all of them to zero.

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

int main(){
  const size_t row{2};
  const size_t column{3};
  
  array<array<int,column>,row>array1{1,2,3,4,5,6};
  
  for(auto& r :array1){
      for(auto& c : r){
          r[c] = 0;
      }
  }

  for(size_t rowA{0}; rowA<array1.size(); rowA++){
    for(size_t columnA{0}; columnA<array1[rowA].size();columnA++){
        cout << array1[rowA][columnA] << " ";
  }
  cout << endl;
  }
  
  
}

[dutch]

  for (auto& row: array1)
      for(auto& element: row)
          element = 0;

[jlb]

You're not using the range based loop correctly. "c" is an element of the "column" not an index value.

Your loop should look more like:

for(auto& row : array1)
    for(auto& col : row)
        c = 0;

[keskiverto]

Apparent doublepost. Previous thread: http://www.cplusplus.com/forum/beginner/275598/

[medosz]

Keskiverto. That was a question about specific element initalization to zero. This question is about to set ALL elements to zero with range-based for statement. Sorry I am a beginner for me it is not the same question.
Thank you for the answers.

[jlb]

Well with the code you posted you really should be using initialization not assignment to set all the elements to zero.