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  1. #include <iostream>
  2.  
  3. using namespace std;
  4.  
  5. int main() {
  6. int arr[3][3]={{1,2,3},{4,5,6},{7,8,9}};
  7.  
  8. int row= sizeof(arr)/sizeof(arr[0]);
  9. int col= sizeof(arr[0])/sizeof(arr[0][0]);
  10.  
  11. for(int i=0;i<row;i++){
  12. if(i%2==0){
  13. for(int j=0;j<col;j++){
  14. cout<<arr[i][j]<<" ";
  15. }
  16. }else{
  17. for(int j=col-1;j>=0;j--){
  18. cout<<arr[i][j]<<" ";
  19. }
  20. }
  21. cout<<endl;
  22. }
  23. }
Success #stdin #stdout 0s 5320KB
stdin
Standard input is empty
stdout
1 2 3 
6 5 4 
7 8 9