有以下程序：#includemain(){ FILE*fp; int i,k=0,n=0; fp=fopen(...
单项选择题有以下程序：#includemain(){ FILE*fp; int i,k=0,n=0; fp=fopen("d1.dat","wb+"); for(i=1;i<4;i++) fprintf(fp,"%d",i); fclose(fp); fp=fopen("d1.dat","r");fseek(fp,1L,SEEK_SET); fscanf(fp,"%d%d",&k,&n); printf("%d%d/n",k,n); fclose(fp);}执行后输出结果是（）。A．1 2 B．123 0 C．1 23 D．230
A.dat","wb+");
B.dat","r");fseek(fp,1L,SEEK_SET);
C.1
D.123
E.1
F.230
