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1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2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=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,
第3题:
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4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5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