有以下程序:
#include <stdio.h>
main()
{
FILE *fp;
int i,a[6]= {1,2,3,4,5,6},k;
fp=fopen("data.dat","w+b");
fprintf(fp,"%d\n",a[0]);
for(i = 1;i < 6;i++)
{
fseek(fp,0L,0);
fscanf(fp,"%d",&k);
fseek(fp,0L,0);
fprintf(fp,"%d\n",a[i]+=k);
}
rewind(fp);
fscanf(fp,"%d",&k);
fclose(fp);
printf("%d\n",k);
}
程序的运行结果是( )。