编辑代码

#include<stdio.h>
int main()
{char c;
 int letters=0,space=0,digit=0,others=0;
 printf("please input some characters\n");
 while((c=getchar())!='\n')
 {if(c>='a'&&c<='Z'//c>='Z')letters++;
 else if(c==)space++;
 else if(c>='0'&&c<='9')digit++;
 else others++;
 }
 printf("all in all:char=%d space=%d digit=%d others=%d\n",letters,space,digit,others);
}