A.使位置指针从文件末尾向前移2*sizeof(int)字节
B.使位置指针从文件末尾向前移2字节
C.使位置指针向文件末尾向前移懂2*sizeof(int)字节
D.使位置指针向文件末尾移动2字节
[单选题]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
[单选题]有以下程序#include<stdio.h>main(){F.ILE *fp; it a[10]={1,2,3,0,0};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);for(i=0;i<10;i++) printf(“%d”,A.;}程序运行结果
[单选题]有以下程序:include<stdio.h> main( ){ FILE*fp; int i,a[6]={1,2,3,4,5,6}; fp=fopen(&q有以下程序:include<stdio.h>main( ){ FILE*fp; int i,a[6]={1,2,3,4,5,6};fp=fopen("d2.dat","w+");for=(i=o;i<6;,i++)fpintf(fp,"%d/n",a[i
[单选题]有以下程序#include<stdio.h>main(){FILE *fp; int i,a[6]={l,2,3,4,5,6};fp=fopen("d3.dat","w+b");fwrite(a,sizeof(int),6,fp);fseek(fp,sizeof(int)*3,SEEK_SET);/*该语句使读文件的位置指针从文件头向后移动3个int型数据*/fread(a,sizeof(int),3,fp); fclose(fp);for(i=0;i<6;i++)pr
[单选题]有以下程序#include <stdio.h>main(){ FILE *fp; int a[10]={1,2,3},i,n;fp=fopen("d1.dat","w");for(i=0;i<3;i++) fprintf(fp,"%d",a[i]);fprintf(fp,"/n");fclose(fp);fp=fopen("d1.dat","r");fscanf(fp,"%d",&n);fclose(fp);printf("%d/n",
[单选题]有以下程序#include<stdio.h>main(){FILE *fp; int i,a[6]={l,2,3,4,5,6};fp=fopen("d3.dat","w+b");fwrite(a,sizeof(int),6,fp);fseek(fp,sizeof(int)*3,SEEK_SET);/*该语句使读文件的位置指针从文件头向后移动3个int型数据*/fread(a,sizeof(int),3,fp); fclose(fp);for(i=0;i<6;i++)pr
[单选题]有以下程序#include <stdio.h>main(){ FILE *fp; int a[10]={1,2,3},i,n;fp=fopen("d1.dat","w");for(i=0;i<3;i++) fprintf(fp,"%d",a[i]);fprintf(fp,"/n");fclose(fp);fp=fopen("d1.dat","r");fscanf(fp,"%d",&n);fclose(fp);printf("%d/n",
[单选题]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);
[单选题]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);
[单选题]有以下程序:#include<stdio.h>main(){ 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,