有以下程序 #include<stdio.h> main() { FILE *fp;int i,a[6]={1,2,3,4,5,6}; 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++)printf("%d,",a[i]); } 程序运行后的输出结果是
A.4,5,6,4,5,6,
B.1,2,3,4,5,6,
C.4,5,6,1,2,3,
D.6,5,4,3,2,1,
第1题:
有以下程序: #include <stdio.h> main() {FILE *fp; int i,k,n; fp=fopen("data.dat","w+"); for(i=1;i<6;i++) {fprintf(fp,"%d ",i); if(i%3==0) fprintf(fp,"\n"); } rewind(fp); 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.0 0
B.123 45
C.1 4
D.1 2
第2题:
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"); 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\n",&k,
A.1 2
B.1 4
C.123 4
D.123 456
第3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);printf("%d%d\n",k,n); fclose(fp); } 程序运行后的输出结果是。
A.1 2
B.1 4
C.123 4
D.123 456
第4题:
有以下程序 #include <stdio.h> main() { FILE *fp; int i,k,n; fp=fopen("data.dar", "w+"); for(i=1;i<6;i++) { fprintf(fp,"%d ",1); if(i%3==0) fprintf(fp, "\n"); } rewind(fp); 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.0 0
B.123 45
C.1 4
D.1 2
第5题:
有以下程序
#include <stdio.h>
main( )
{ FILE *fp;int i,a[6]={1,2,3,4,5,6};
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++)printf("%d,",a[i]);
}
程序运行后的输出结果是
A.4,5,6,4,5,6,
B.1,2,3,4,5,6,
C.4,5,6,1,2,3,
D.6,5,4,3,2,1,