有以下程序
#include<stdio.h>
main()
{
FILE *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.;
}
程序运行结果是( )。
第1题:
有以下程序 #include<stdio.h> main() {FILE *fp;int i=20,j=30,k,n; fp=fopen("D1v.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2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
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 ",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5题:
有以下程序: #include<stdio.h> main( ) {FILE*fp;char str[10]; fp=fopen("myfile,dat",""); {puts("abe",ip);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.内类型不一致而出错
第6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=O;i<4;i++)fwrite(&ch[i],1,1,fp); fseek (fp,-2L,SEEK_END); fread (&t,1,1,fp); fclose (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7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8题:
有以下程序 #include <stdio.h> main() {FILE *fp; int a[10]={1,2,3},i,n; fp=fopen("d1.daf","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);
A.12300
B.123
C.1
D.321
第9题:
有以下程序 #include <stdio.h> void WriteStr(char *fn, char *str) { FILE *fp; fp=fopen(fn,"w"); fputs(str,fp);fclose(fp); } main() { WriteStr("t1.dat","start"); WriteStr("t1.dat","end"); } 程序运行后,文件t1.dat中的内容是
A.start
B.end
C.startend
D.endrt
第10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,