编辑代码

 #include"stdio.h"
  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＞='A'＆＆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);
           }