#include<stdio.h>
#include<string.h>
void C_program017()
{
	char a[100];
	int count1=0,count2=0,count3=0,count4=0;
	int i=0,t;
	gets(a);
	t=strlen(a);
	while(a[i]!='\0'&&i<=t)
	{
		if((a[i]<='z'&&a[i]>='a')||(a[i]<='z'&&a[i]>='a'))
			count1++;
		else if(a[i]<='9'&&a[i]>='0')
			count2++;
		else if(a[i]==' ')
			count3++;
		else 
			count4++; //因為要統計'\0'，所以看上去比實際多一個。
		i++;

	}
	printf("count1=%d\ncount2=%d\ncount3=%d\ncount4=%d\n",count1,count2,count3,count4);
}