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,