题目内容:
有以下程序 #include<stdio.h>
main()
{FILE*fp;inti=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.2030
B.2050
C.3050
D.3020
参考答案:
答案解析: