[求助]请分析下这题的运算结果

请帮我分析下 这个程序的运行结果
#include"stdio.h"
#define N 10
main()
{
int a[10]={2,4,6,8,10,12,14,16,18,20},i;
FILE *fp;
fp=fopen("tt.dat","w");
for(i=0;i<10;i++)
fprintf(fp,"%d\t",a[i]);
fclose(fp);
fp=fopen("tt.dat","r");i=0;
while(!feof(fp)) {fscanf(fp,"%d\t",a[i]);i++;}
for(i=0;i<10;i++)
printf("%d\t",a[i]);
}
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以后要注意哦

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结果如下:
2 4 6 8 10 12 14 16 18 20
Press any key to continue
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fclose(fp)需要 rewind(fp)吧

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