View Compilation Error

0_0_32325980_18153.cpp:1:9: error: expected unqualified-id before 'for'
         for(int i=n;i>=1;i--)
         ^
0_0_32325980_18153.cpp:1:21: error: 'i' does not name a type
         for(int i=n;i>=1;i--)
                     ^
0_0_32325980_18153.cpp:1:26: error: 'i' does not name a type
         for(int i=n;i>=1;i--)
                          ^