> E:\程序\1002\1002.cpp(11) : error C2664: 'strcmp' : cannot convert parameter 1 from 'char' to 'const char *'
        Conversion from integral type to pointer type requires reinterpret_cast, C-style cast or function-style cast
执行 cl.exe 时出错.

???
> 
> return strcmp( *（(tel*)a）->telnum,*（(tel*)b）->telnum);