C语言去掉不是尾部*的全部*

#include <stdio.h>
void  fun( char *a, char *p )
{
char *t=a;
  for(;t<=p;t++)
     if(*t!='*') 
        *(a++)=*t;
  for(;*t!='\0';t++)
     *(a++)=*t;
  *a='\0';
}

main()
{  char  s[81],*t;
   void NONO (  );
   printf("Enter a string:\n");gets(s);
   t=s;
   while(*t)t++;
   t--;
   while(*t=='*')t--;
   fun( s , t );
   printf("The string after deleted:\n");puts(s);
   NONO();
}
void NONO()
{/* 本函数用于打开文件，输入数据，调用函数，输出数据，关闭文件。 */
  FILE *in, *out ;
  int i ; char s[81],*t ;
  in = fopen("in.dat","r") ;
  out = fopen("out.dat","w") ;
  for(i = 0 ; i < 10 ; i++) {
    fscanf(in, "%s", s) ;
    t=s;
    while(*t)t++;
    t--;
    while(*t=='*')t--;
    fun(s,t) ;
    fprintf(out, "%s\n", s) ;    
  }
  fclose(in) ;
  fclose(out) ;
}