单项选择题

有以下程序
#include
main()
FILE *fp; int a[10]=1,2,3,i,n;
fp=fopen("dl.dat","w");
for(i=0;i＜3;i++) fprintf(fp,"%d",a[i]);
fprintf(fp,"\n");
fclose(fp);
fp=fopen("dl.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

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单项选择题

单项选择题

有以下程序#include main() FILE *fp; int a[10]=1,2,3,i,n;fp=fopen("dl.dat","w");for(i=0;i＜3;i++) fprintf(fp,"%d",a[i]);fprintf(fp,"\n");fclose(fp);fp=fopen("dl.dat","r");fscanf(fp,"%d",＆n);fclose(fp);printf("%d\n",n);程序的运行结果是______。