/in/foo.cc:25:28: error: stray '\342' in program
 for(int i=a.size()-1;i>=0;i–) A.push_back(a[i]-‘0’);
                            ^
/in/foo.cc:25:29: error: stray '\200' in program
 for(int i=a.size()-1;i>=0;i–) A.push_back(a[i]-‘0’);
                             ^
/in/foo.cc:25:30: error: stray '\223' in program
 for(int i=a.size()-1;i>=0;i–) A.push_back(a[i]-‘0’);
                              ^
/in/foo.cc:25:50: error: stray '\342' in program
 for(int i=a.size()-1;i>=0;i–) A.push_back(a[i]-‘0’);
                                                  ^
/in/foo.cc:25:51: error: stray '\200' in program
 for(int i=a.size()-1;i>=0;i–) A.push_back(a[i]-‘0’);
                                                   ^
/in/foo.cc:25:52: error: stray '\230' in program
 for(int i=a.size()-1;i>=0;i–) A.push_back(a[i]-‘0’);
                                                    ^
/in/foo.cc:25:54: error: stray '\342' in program
 for(int i=a.size()-1;i>=0;i–) A.push_back(a[i]-‘0’);
                                                      ^
/in/foo.cc:25:55: error: stray '\200' in program
 for(int i=a.size()-1;i>=0;i–) A.push_back(a[i]-‘0’);
                                                       ^
/in/foo.cc:25:56: error: stray '\231' in program
 for(int i=a.size()-1;i>=0;i–) A.push_back(a[i]-‘0’);
                                                        ^
/in/foo.cc:4:1: error: invalid use of template-name 'std::vector' without an argument list
 vector[int] mul(vector[int] &A,int b)
 ^~~~~~
In file included from /usr/include/c++/6/vector:64:0,
                 from /usr/include/c++/6/queue:61,
                 from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:86,
                 from /in/foo.cc:1:
/usr/include/c++/6/bits/stl_vector.h:214:11: note: 'template<class _Tp, class _Alloc> class std::vector' declared here
     class vector : protected _Vector_base<_Tp, _Alloc>
           ^~~~~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:23:7: error: missing template arguments before '[' token
 vector[int] A;
       ^
/in/foo.cc:23:8: error: expected primary-expression before 'int'
 vector[int] A;
        ^~~
/in/foo.cc:23:8: error: expected ']' before 'int'
/in/foo.cc:25:27: warning: for increment expression has no effect [-Wunused-value]
 for(int i=a.size()-1;i>=0;i–) A.push_back(a[i]-‘0’);
                           ^
/in/foo.cc:25:33: error: 'A' was not declared in this scope
 for(int i=a.size()-1;i>=0;i–) A.push_back(a[i]-‘0’);
                                 ^
/in/foo.cc:27:12: error: 'A' was not declared in this scope
 auto C=mul(A,b);
            ^
/in/foo.cc:27:15: error: 'mul' was not declared in this scope
 auto C=mul(A,b);
               ^