View Compilation Error

0_0_27060296_18530.cpp:10:3: error: stray '#' in program
          dd+=a[i]
   ^
0_0_27060296_18530.cpp:10:10: error: stray '#' in program
          dd+=a[i]
          ^
0_0_27060296_18530.cpp:10:17: error: stray '#' in program
          dd+=a[i]
                 ^
0_0_27060296_18530.cpp: In function 'int main()':
0_0_27060296_18530.cpp:9:11: error: 'i' was not declared in this scope
      for (i=1;i<m;i++){
           ^
0_0_27060296_18530.cpp:10:4: error: lvalue required as unary '&' operand
          dd+=a[i]
    ^
0_0_27060296_18530.cpp:10:11: error: lvalue required as unary '&' operand
          dd+=a[i]
           ^
0_0_27060296_18530.cpp:10:18: error: lvalue required as unary '&' operand
          dd+=a[i]
                  ^