View Compilation Error

0_0_39022221_5473.cpp: In function 'int main()':
0_0_39022221_5473.cpp:44:32: error: expected primary-expression before '/' token
   44 |                 vector<int>A,B;/
      |                                ^
0_0_39022221_5473.cpp:45:17: error: expected primary-expression before 'for'
   45 |                 for(int i=a.size()-1;i>=0;i--)A.push_back(a[i]-'0');
      |                 ^~~
0_0_39022221_5473.cpp:45:38: error: 'i' was not declared in this scope
   45 |                 for(int i=a.size()-1;i>=0;i--)A.push_back(a[i]-'0');
      |                                      ^