#include <iostream>
#include <algorithm>
//myArrayNestedSum.cpp
// inner one nested array within
//one outer array
using namespace std;

int main(){
const int row=3; 
const int column=4; 
char str1[4]={'A','B','C','D'};
int n1[row][column] = {{1,2,3},
			     {5,6,7,8},
				 {9,10,12}};
int sum;
  for(int i=0; i< 3; i++)
  {
  	//str1[i] += str1[i];
  cout<< " " <<  str1[i];
	
	for(int j=0; j<3; j++)
	{
			
			cout<< " " << str1[i] <<":"<< n1[i][j];
			sum += n1[i][j];
		
	}
	//cout<<"  current sum " << sum; 
	cout<<"  cummulative  sum " << sum;
	cout<<"\n" ; 
  }
  cout<<"\n final sum " << sum;
  return 0;   
}