大佬帮忙看看哪里错了

大佬的土豆

#include<stdio.h>
#include<stdlib.h>
main()
{
  static char *name [] = {"Illegal day",
   "Monday",
   "Tuesday",
   "Wednesday",
   "FrIDAy",
   "Saturday",
   "Sunday" };
  int i ;
  char *ps ;
  char *day_name(char *name [] ,int n);
  printf("input Day No:\n");
  scanf("%d",&i);
  if(i<0)  exit(i);
  printf("Day No:%2d-->%s\n",i,ps);
}
char *day_name (char *name [] ,int n)
{
  char *pp1,*pp2;
  pp1=*name;
  pp2=*(name+n);
  return((n<1||n>7)? pp1:pp2 );
}
错误提示是   warning C4700: local variable 'ps' used without having been initialized    有没有大佬帮忙看看

苏紫方璇

好像是说你ps没有初始化

buerse

warning 是警告  
ps没有初始化