' must point to struct/union    c:\users\radha krishna\documents\visual studio 0000\projects\binarysearchtree\binarysearchtree\main.c   00 error C0000: 'temp' : undeclared identifier c:\users\radha krishna\documents\visual studio 0000\projects\binarysearchtree\binarysearchtree\main.c   00 error C0000: 'temp' : undeclared identifier c:\users\radha krishna\documents\visual studio 0000\projects\binarysearchtree\binarysearchtree\main.c   00 error C0000: 'temp' : undeclared identifier c:\users\radha krishna\documents\visual studio 0000\projects\binarysearchtree\binarysearchtree\main.c   00 