/in/foo.cc: In function 'int main()':
/in/foo.cc:32:8: error: storage size of 'a' isn't known
int a[], int b[]; cin>>a[]>>b[];
^
/in/foo.cc:32:11: error: expected unqualified-id before 'int'
int a[], int b[]; cin>>a[]>>b[];
^~~
/in/foo.cc:32:27: error: expected primary-expression before ']' token
int a[], int b[]; cin>>a[]>>b[];
^
/in/foo.cc:32:30: error: 'b' was not declared in this scope
int a[], int b[]; cin>>a[]>>b[];
^
/in/foo.cc:32:32: error: expected primary-expression before ']' token
int a[], int b[]; cin>>a[]>>b[];
^