有以下程序
#include <stdio.h>
Main()
{FILE *fp; int i=20,j=30,k,n;
Fp=fopen("d1.dat","w");
Fprintf(fp,"%d\n",i);fprintf(fp,"%d\n",j);
Fclose(fp);
Fp=fopen("d1.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.20 30 B.20 50 C.30 50 D.30 20正确答案A
