21
6
123456
11
第1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.daf","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2题:
有以下程序: #include<stdio.h> main() { FILE *fp; int i,k=0,n=0; fp=fopen("d1.dat","w"); for(i=1;i<4;i++) fprintf(fp,"%d",i); fclose(fp); fp=fopen("d1.dat","r"); 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.0 0
第3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 ",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4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"); 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.20 30
B.20 50
C.30 50
D.3020
第5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6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7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",n); 程序的运行结果是( )。
A.12300
B.123
C.1
D.321
第8题:
有以下程序 #include <stdio.h> main( ) { FILE *fp; int i,k=0,n=0; fp=fopen(“d1.dat”,”w”); for(i=1;i<4;i++) fprintf(fp,”%d”,i); fclose(fp); fp=fopen(“d1.dat”,”r”); 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.0 0
第9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10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,
第11题:
有以下程序: #include <stdio.h> main() {FLLE *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.dar","r"); 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.20 30
B.20 50
C.30 50
D.30 20
第12题:
21
6
123456
11
第13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,
第14题:
有下列程序: #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=open("d1.dat","r"); fscanf(fp,"%d",&n); fclose(fp); prinff("%d\n",n); 程序的运行结果是( )。
A.12300
B.123
C.1
D.321
第15题:
有以下程序 #include <stdio.h> main() { FILE *fp; int' a[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 = fopenCd2.dat", "rb"); fread(a, sizeof(int), 10, fp); fclose(fp); for (i=0; i<10; i++) printf("%d,", a[i]); }
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,
第16题:
有以下程序:#include <stdlo.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);
A.0 0
B.123 45
C.1 4
D.1
第17题:
有以下程序: #include <stdio.h> main() FILE *fp; int i, k=0, n=0; fp=fopen("d1.dat","w"); for(i=l;i<4;i++) fprintf(fp,"%d",i); fclose(fp); fp=fopen("d1.dat","r"); 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.0 0
第18题:
有以下程序: #include <stdio.h> main() { FILE *fp;int i,k=0,n=0; fp=fopen("d1.dat","w"); for(i=1;i<4;i++) fprintf(fp,"%d",i); fclose(fp); fp=fopen("d1.dat","r"); fscanf(fp,"%d%d",&k,&n);printf("%d%d\n",k,n); fclose(fp); { 执行后的输出结果是( )。
A.1 2
B.123 0
C.1 23
D.0 0
第19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);} 程序运行
A.20 30
B.20 50
C.30 50
D.30 20
第20题:
有以下程序: #include <stdio.h> main() { FILE *fp; int i; char ch[]="abcd",t; fp=fopen("abc.dat","wb+"); for(i=0;i<4;i++)fwrite(&ch[i]1,1,fp); fseck(fp,-2L,SEEK_END) ; fread(&t,1,1,fp); felose(fp); printf("%c\n",t); } 程序执行后的输出结果是( )。
A.d
B.c
C.b
D.a
第21题:
若有以下程序
#include <stdio.h>
int a[ ]={2,4,6,8};
main( )
{ int i;
int *p=a;
for(i=0;i<4;i++) a[i]=*p;
printf("%d\n",a[2]);}
上面程序的输出结果是
A.6
B.8
C.4
D.2
第22题:
有以下程序: #include<stdi0.h> main( ) { FILE *fp; int i=20,j=50,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.20 30
B.20 50
C.30 50
D.30 20
第23题:
12300
123
1
321
第24题:
E
EOF
ABCDE
A