/in/foo.cc: In function 'int count(int)':
/in/foo.cc:12:5: warning: statement has no effect [-Wunused-value]
    n/10; 
    ~^~~
/in/foo.cc:15:1: warning: no return statement in function returning non-void [-Wreturn-type]
 }
 ^
/in/foo.cc: In function 'int total(int, int)':
/in/foo.cc:24:1: warning: no return statement in function returning non-void [-Wreturn-type]
 }
 ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:27:10: warning: unused variable 'sum' [-Wunused-variable]
  int A,B,sum=0,i;
          ^~~
/in/foo.cc:27:16: warning: unused variable 'i' [-Wunused-variable]
  int A,B,sum=0,i;
                ^