输入一个字符，判断该字符是数字、字母、空格还是其他字符

#include<stdio.h>
int main()
{
  char ch;
  ch=getchar();
  if(ch>='a'&&ch<='z'||ch>='A'&&ch<='Z')
  printf("It is an English character\n");
  else if(ch>='0'&&ch<='9')
  printf("It is a digit character\n");
  else if(ch==' ')
  printf("It is a space character\n");
  else
  printf("It is other character\n");
  return 0;
}