实例15\15.BMP ......\Student.cpp ......\STUDENT.DSK ......\Student.dsp ......\Student.dsw ......\STUDENT.EXE ......\STUDENT.H ......\Student.ncb ......\Student.obj ......\Student.opt ......\Student.plg ......\STUDENT.PRJ .....1\11.BMP ......\EXCHANGE.CPP ......\EXCHANGE.DSP ......\EXCHANGE.DSW ......\EXCHANGE.EXE ......\EXCHANGE.ncb ......\EXCHANGE.OBJ ......\EXCHANGE.OPT ......\EXCHANGE.PLG 实例15 实例11