有以下程序
#include <stdio.h>
main()
{ FILE *fp; int i;
char ch[]="abcd",t;
fp=fopen("abc.dat","wb+");
for(i=0; i<4; i++) fwrite(&ch[i],1,1,fp);
fseek(fp,-2L,SEEK_END);
fread(&t,1,1,fp);
fclose(fp);
printf("%c\n",t);
}
程序执行后的输出结果是
A)d
B)c
C)b
D)a
