View Compilation Error

0_0_28142397_24745.cpp:1:1: error: 'L' does not name a type
 L[1]=1;
 ^
0_0_28142397_24745.cpp:2:9: error: 'r' does not name a type
         r[n]=n;
         ^
0_0_28142397_24745.cpp:3:9: error: expected unqualified-id before 'for'
         for (i=2; i<=n; i++)
         ^
0_0_28142397_24745.cpp:3:19: error: 'i' does not name a type
         for (i=2; i<=n; i++)
                   ^
0_0_28142397_24745.cpp:3:25: error: 'i' does not name a type
         for (i=2; i<=n; i++)
                         ^
0_0_28142397_24745.cpp:10:9: error: expected unqualified-id before 'for'
         for (i=n-1; i>=1; i--)
         ^
0_0_28142397_24745.cpp:10:21: error: 'i' does not name a type
         for (i=n-1; i>=1; i--)
                     ^
0_0_28142397_24745.cpp:10:27: error: 'i' does not name a type
         for (i=n-1; i>=1; i--)
                           ^