以下程序的功能是# include <stdio.h>main （){ FILE *fp1;*fp2; fp1=fopen （"file1","r"

以下程序的功能是# include <stdio.h>main (){ FILE *fp1;*fp2; fp1=fopen ("file1","r"); fp2=fopen ("file2","w"); while (!feof (fp1)) fputc (fgetc (fp1),fp2); fclose (fp1); fclose (fp2);}A．将磁盘文件的内容显示在屏幕上 B．将两个磁盘文件合为一个C．将一个磁盘文件复制到另一个磁盘文件中D．将两个磁盘文件合并后送屏幕