View Compilation Error

0_0_39366133_18087.cpp: In function 'int main()':
0_0_39366133_18087.cpp:13:14: error: expected initializer before '.' token
   13 |         int i.j.k;
      |              ^
0_0_39366133_18087.cpp:21:13: error: 'i' was not declared in this scope
   21 |         for(i=0;i<n;i++)
      |             ^
0_0_39366133_18087.cpp:25:13: error: 'i' was not declared in this scope
   25 |         for(i=0;i<n-2;i++)
      |             ^
0_0_39366133_18087.cpp:26:17: error: 'j' was not declared in this scope
   26 |             for(j=i+1;j<n-1;j++)
      |                 ^
0_0_39366133_18087.cpp:27:21: error: 'k' was not declared in this scope
   27 |                 for(k=j+1;k<n;k++)
      |                     ^