下面的程序很简单，但为什么就是没有输入tomoeeow，我纳闷！请有经验人士指教！

#include<stdio.h>
main()
{
   char a[80]="tomoeeow",b[80]="",c[80]="";
   FILE *fp=NULL,*fq=NULL;

   fp=fopen("a.txt","r+");
   if(fp==NULL)  { printf("can't open this file\n ");  exit(0); }
   fprintf(fp,"%s",a);
   fgets(fp,"%s",b);
   fq=fopen("c.txt","r+");
   if(fq==NULL) {  printf("can't open this file\n ");  exit(0); }
   fprintf(fq,"%s",b);
   fgets(fq,"%s",c);
   puts(c);
   fclose(fp);
   fclose(fq);
}