有以下程序:#include<stdio.h>main(){ FILE*fp; int i,k=0,n=0; fp=fopen("d1.dat","wb+"); for(i=1;i<4;i++) fprintf(fp,"%d",i); fclose(fp); fp=fopen("d1.dat","r");fseek(fp,1L,SEEK_SET); 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.230
第1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=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4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;1<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 2 3
D.1 23
第5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