everest% CC main3.C bstring2.C
main3.C:
"main3.C", line 22: error(1515): a value of type "Student **" cannot be
          assigned to an entity of type "Person **"
     ptrptr = &sptr ;
            ^

"main3.C", line 23: error(1515): a value of type "Faculty **" cannot be
          assigned to an entity of type "Person **"
     ptrptr = &fptr ;
            ^

2 errors detected in the compilation of "main3.C".
bstring2.C:
everest%