/in/foo.c: In function 'main':
/in/foo.c:6:2: error: two or more data types in declaration specifiers
  int a[10][10]={0},b[10][10]={0};
  ^~~
/in/foo.c:7:8: warning: missing terminating " character
  scanf("
        ^
/in/foo.c:7:8: error: missing terminating " character
/in/foo.c:8:2: error: expected expression before 'for'
  for(i=0;i<n;i++)
  ^~~
/in/foo.c:21:1: error: expected ';' before '}' token
 }
 ^
/in/foo.c:6:20: warning: unused variable 'b' [-Wunused-variable]
  int a[10][10]={0},b[10][10]={0};
                    ^
/in/foo.c:6:6: warning: unused variable 'a' [-Wunused-variable]
  int a[10][10]={0},b[10][10]={0};
      ^