题目内容

有以下程序#includemain(){FILE*fp;inta[10]={1,2,3,0,0},i;fp=fopen("d2.dat","wb");fwrite(a,sizeof(int),5,fp);fwrite(a,sizeof(int),5,fp);fclose(fp);fp=fopen("d2.dat","rb");fread(a,sizeof(int),10,fp);fclose(fp);for(i=0;i<10;i++)printf("%d,",a[i]);}程序的运行结果是

A. 1,2,3,0,0,0,0,0,0,0,
B. 1,2,3,1,2,3,0,0,0,0,
C. 123,0,0,0,0,123,0,0,0,0,
D. 1,2,3,0,0,1,2,3,0,0,

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以下程序依次把从终端输入的字符存放到f文件中,用#作为结束输入的标志,则在横线处应填入的选项是#includemain(){FILE*fp;charch;fp=fopen("fname","w");while((ch=getchar())!='#')fputc(__________);fclose(fp);}

A. ch,"fname"
B. fp,ch
C. ch
D. ch,fp

有以下程序#includemain(){FILE*fp;charstr[10];fp=fopen("myfile.dat","w");fputs("abc",fp);fclose(fp);fp=fopen("myfile.dat","a+");fprintf(fp,"%d",28);rewind(fp);fscanf(fp,"%s",str);puts(str);fclose(fp);}程序运行后的输出结果是

A. abc
B. 28c
C. abc28
D. 因类型不一致而出错

若有以下程序#includemain(){FILE*fp;inti,a[6]={1,2,3,4,5,6},k;fp=fopen("data.dat","w+");for(i=0;i<6;i++){fseek(fp,0L,0);fprintf(fp,"%d\n",a[i]);}rewind(fp);fscanf(fp,"%d",&k);fclose(fp);printf("%d\n",k);}则程序的输出结果是

A. 123456
B. 1
C. 6
D. 21

生产性建设项目总投资包括（）、（）和（）三个部分。