View Compilation Error

0_0_36621152_17464.cpp: In function 'int main()':
0_0_36621152_17464.cpp:52:20: error: 'from' was not declared in this scope
         for(int i =from ; i<=to ; i++)
                    ^
0_0_36621152_17464.cpp:52:30: error: 'to' was not declared in this scope
         for(int i =from ; i<=to ; i++)
                              ^