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 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3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,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