有以下程序 #include <stdio.h> main() FILE *
问题:
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