#include <stdio.h>
#include <string.h>
#define N 100
int main()
{    int big,small,digita,space,els,i;
    char a[N],*p;
    p=a;
    scanf("%s",p);
    big=0;small=0;digita=0;space=0;els=0;
    for(i=0;a[i]!='\0';i++)
     {
       if (a[i]>='A'&& a[i]<='Z')
          big=big+1;
       else if((a[i]>='a')&&(a[i]<='z'))
         small=small+1;
       else if((a[i]>='0')&&(a[i]<='9'))
         digita++;
       else if a[i]=' '
        space++;
       else els++;  
       }
      printf("big=%d\n",big);           
      printf("small=%d\n",small); 
      printf("digita=%d\n",digita); 
      printf("space=%d\n",space); 
      printf("els=%d\n",els); 
        system("pause");
}统计输入字符串中的大写字母、小写字母、空格及其它字符个数