#include<stdio.h>
int main()
{
  int sz[10]={0},zm[26]={0},z[26]={0},i,space=0,e=0,t=0;
  char c;
  printf("請輸入一段字符，統(tǒng)計其中各字符的數量\n");
  while((c=getchar())!='\n')
  {
    if(c<='z'&&c>='a')
      zm[c-'a']++;
    else if(c<='Z'&&c>='A')
      z[c-'A']++;
    else if(c<='9'&&c>='0')
      sz[c-'0']++;
    else if(c==' ')
      space++;
    else
      e++;
  }
  printf("\n\n");
  for(i=0;i<=9;i++)
  {
    t++;
    printf(" %d的個數為%d  ",i,sz[i]);
    if(t%3==0)
      printf("\n");
  }
  t=0;
  printf("\n\n\n");
  for(i=0;i<=25;i++)
  {
    t++;
    printf(" %c的個數為%d  ",i+97,zm[i]);
    if(t%3==0)
      printf("\n");
  }
  t=0;
  printf("\n\n\n");
  for(i=0;i<=25;i++)
  {
    t++;
    printf(" %c的個數為%d  ",i+65,z[i]);
    if(t%3==0)
      printf("\n");
  }
  t=0;
  printf("\n\n\n");
  printf(" 空格的個數為%d\n\n",space);
  printf(" 其他字符的個數為%d\n",e);
  return 0;
}

#include <stdio.h>

#define MAXWORD 30  //單詞的最大長度
#define IN 1  //在單詞內，即沒有遇到空格
#define OUT 0  //在單詞外，即遇到了空格

/*word length ==> wl單詞長度簡稱*/

int wl()
{
  char c;
  int i;
  int nc;
  int state;  //state為單詞的狀態(tài)：IN或OUT;
  int overflow;  //操過MAXWORD的單詞個數
  int wl[MAXWORD]; //長度為1~30的的字符長度統(tǒng)計

  state = OUT;
  nc = 0;
  overflow = 0;

  for(i = 1; i < MAXWORD; ++i)
    wl[i] = 0;

  while((c = getchar()) != EOF)
    if(c == ' ' || c == '\n' || c == '\t')
    {
      state = OUT;

      if(nc > 0)
        if(nc < MAXWORD)
          ++wl[nc];
        else
          ++overflow;
      nc = 0;
    }
    else if(state == OUT)
    {
      state = IN;
      nc = 1;
    }
    else
      ++nc;


    for(i = 1; i < MAXWORD; ++i)
      printf("長度為：%d的單詞個數為：%d : \n\n", i, wl[i]);

      return 0;
}
main()
{
  wl();
}