View Compilation Error

0_0_33465000_2595.cpp:7:12: error: expected constructor, destructor, or type conversion before '(' token
     reverse(s.begin(), s.end());
            ^
0_0_33465000_2595.cpp:9:5: error: expected unqualified-id before 'for'
     for (int i = 0; i < s.size(); i += by) {
     ^
0_0_33465000_2595.cpp:9:21: error: 'i' does not name a type
     for (int i = 0; i < s.size(); i += by) {
                     ^
0_0_33465000_2595.cpp:9:35: error: 'i' does not name a type
     for (int i = 0; i < s.size(); i += by) {
                                   ^
0_0_33465000_2595.cpp:15:12: error: expected constructor, destructor, or type conversion before '(' token
     reverse(result.begin(), result.end());
            ^
0_0_33465000_2595.cpp:16:5: error: expected unqualified-id before 'return'
     return result;
     ^
0_0_33465000_2595.cpp:17:1: error: expected declaration before '}' token
 }
 ^