/in/foo.cc: In function 'int main()':
/in/foo.cc:6:15: error: expected ';' before 'b'
    6 |         cin>>a
      |               ^
      |               ;
    7 |         b=a%10;
      |         ~      
/in/foo.cc:8:18: error: expected ';' before 'd'
    8 |         c=a/10%10
      |                  ^
      |                  ;
    9 |         d=a/10
      |         ~         
/in/foo.cc:5:15: warning: unused variable 'b' [-Wunused-variable]
    5 |         int a,b,c,d;
      |               ^
/in/foo.cc:5:19: warning: unused variable 'd' [-Wunused-variable]
    5 |         int a,b,c,d;
      |                   ^