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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int arr[4][4] = {
  6.         {1, 2, 3, 4},
  7.         {5, 6, 7, 8},
  8.         {9, 10, 11, 12},
  9.         {13, 14, 15, 16}
  10.     };
  11.  
  12.     int row = sizeof(arr)/sizeof(arr[0]);
  13.     int col = sizeof(arr[0])/sizeof(arr[0][0]);
  14.     for(int i =0; i<row;i++){
  15.     	if(i%2==0){
  16.     		for(int j =0 ; j < col;j++){
  17.     			cout<<arr[i][j]<<" ";
  18.     		}
  19.     	}
  20.     	else{
  21.     		for(int j = col-1; j>=0; j--){
  22.     			cout<<arr[i][j]<<" ";
  23.     		}
  24.     	}
  25.     }
  26. 	return 0;
  27. }
Success #stdin #stdout 0.01s 5284KB
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Standard input is empty
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1 2 3 4 8 7 6 5 9 10 11 12 16 15 14 13
https://ideone.com/uIFzDD
language:
C++14 (gcc 8.3)
created:
3 days ago
visibility:
public

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