有以下程序: #include <stdio.h> main() FILE *fp; int i, a[6]=1,2,3 ,4,5,6; fp=fopen( d3.dat , w +b ); fwrite(a,sizeof(int), 6, fp); fseek(fp, sizeof(int)*3, SEEK_SET); *该语句使读文件的位置指针从文件头向后移动3个int型数据*/ fread(a, sizeof(int), 3, fp); fclose(fp); for(i=0; i<6; i++) printf( %d, , a[i]); 程序运行后的输出结果是
A) 4,5,6,4,5,6,
B) 1,2,3,4,5,6,
C) 4,5,6,1,2,3,
D) 6,5,4,3,2,1,