c6_2.c

适合于初学者的C程序

/* Note:Your choice is C IDE */
#include "stdio.h"
void main()
{char c;
	int letter=0,space=0,digit=0,other=0;
	printf("input one line string:\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 
		other++;
	}
	printf("letter:%d,space:%d,digit:%d,other:%d\n",letter,space,digit,other);
    
}