定义fp为文件型指针变量,使用fopen只读方式打开一个已存在的二进制文件,以下正确的调用形式为:

 “读”而打开此文件：fp=fopen(______)；。

B.fp=fopen(“d 1.dat”,”rb”);

C.fp=fopen(“d 1.dat”,”r+”);

D.fp=fopen(“d 1.dat”,”w”);

A、FILE *fp

fp=fopen("file1","rb")

B、FILE *fp；

fp=fopen("file1","r+")

C、FILE *fp

fp=fopen("file1","r")

D、FILE *fp

fp=fopen("file1","rb+")

B、FILE *FP; FP=fopen("fil2","rb");

C、FILE *FP; FP=fopen("fil2","wb+");

D、FILE *FP; FP=fopen("fil2","rb+");

A、rb

B、w

C、a

D、a+

A、fopen("test.dat","wb")

B、fopen("test.dat","rb")

C、fopen("test.dat","w")

D、fopen("test.dat","a")

A、rb+

B、b

C、rb

D、r+