下面编程都有哪些错误有谁知道

#include <stdio.h>
int main(void)
{
char ch;
int lc = 0; /* 统计小写字母
int uc = 0; /* 统计大写字母
int oc = 0; /* 统计其他字母

 while ((ch = getchar()) != '#')
 {
      if ('a' <= ch >= 'z')
           lc++;
      else if (!(ch < 'A') || !(ch > 'Z')
           uc++;
      oc++;
 }
 printf(%d lowercase, %d uppercase, %d other, lc, uc, oc);
 return 0;

}

改好了

#include <stdio.h>
int main(void)
{
char ch;
int lc = 0; 
int uc = 0; 
int oc = 0; 
 while ((ch = getchar()) != '#')
 {
      if ('a' <= ch||ch >= 'z')
           lc++;
      else if(!(ch < 'A')|| !(ch > 'Z'))
         uc++;
      oc++;
 }
 printf("%d lowercase, %d uppercase, %d other", lc, uc, oc);
 return 0;
 }