View Compilation Error

0_0_18272159_10270.cpp: In function 'void Output(int)':
0_0_18272159_10270.cpp:28:6: error: 'i' was not declared in this scope
  for(i=0; i<n; i++){
      ^
0_0_18272159_10270.cpp:29:7: error: 'j' was not declared in this scope
   for(j=0; j<n; j++){
       ^