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