单选题：有以下程序 #include <stdio.h>main(){FILE *fp; int k,n,a[6]={1,2

有以下程序
#include <stdio.h>
main()
{
FILE *fp; int k,n,a[6]={1,2,3,4,5,6};
fp=fopen("d2.dat","w");
fprintf(fp, "%d%d%d \n",a[0],a[1],a[2]); fprintf(fp, "%d%d%d \n",a[3],a[4],a[5]);
fclose(fp);
fp=fopen("d2.dat","r");
fscanf(fp, "%d%d",&k,&n); printf("%d%d\n",k,n);
fclose(fp);
}
程序运行后的输出结果是（　　） A．1 2
B．1 4
C．123 4
D．123 456
8．有以下程序
#include <stido.h>
main()
{
FILE *fp; int a[10]={1,2,3,0,0},i;
fp=fopen("d2.dat","wb");
fwrite(a,sizeof(int),5,fp);
fwrite(a,sizeof(int),5,fp);
fclose(fp);
fp=fopen("d2.dat","rb");
fread(a,sizeof(int),10,fp);
fclose(fp);
for(i=0;i<10;i++) printf("%d,",a[i]);
}
程序的运行结果是（　　）
E．1,2,3,0,0,0,0,0,0,0,
F．1,2,3,1,2,3,0,0,0,0,
G．123,0,0,0,0,123,0,0,0,0,
H．1,2,3,0,0,1,2,3,0,0,