/in/foo.cc: In function 'int main()':
/in/foo.cc:5:6: error: expected unqualified-id before numeric constant
  int 5,4
      ^
/in/foo.cc:7:6: error: expected ';' before numeric constant
  cin 5,4;
      ^
/in/foo.cc:7:9: warning: statement has no effect [-Wunused-value]
  cin 5,4;
         ^
/in/foo.cc:8:1: error: 'cin5' was not declared in this scope
 cin5,3;
 ^~~~
/in/foo.cc:8:1: note: suggested alternative: 'uint'
 cin5,3;
 ^~~~
 uint
/in/foo.cc:9:1: error: 'cin4' was not declared in this scope
 cin4,2;
 ^~~~
/in/foo.cc:9:1: note: suggested alternative: 'uint'
 cin4,2;
 ^~~~
 uint
/in/foo.cc:10:1: error: 'cin3' was not declared in this scope
 cin3,2;
 ^~~~
/in/foo.cc:10:1: note: suggested alternative: 'uint'
 cin3,2;
 ^~~~
 uint
/in/foo.cc:11:11: warning: right operand of comma operator has no effect [-Wunused-value]
 cout<<1,5,3,4,2;
           ^
/in/foo.cc:11:13: warning: right operand of comma operator has no effect [-Wunused-value]
 cout<<1,5,3,4,2;
             ^
/in/foo.cc:11:15: warning: right operand of comma operator has no effect [-Wunused-value]
 cout<<1,5,3,4,2;
               ^
/in/foo.cc:11:16: warning: right operand of comma operator has no effect [-Wunused-value]
 cout<<1,5,3,4,2;
                ^