c8_9.c

适合于初学者的C程序

/* Note:Your choice is C IDE */
#include "stdio.h"
int letter,digit,space,others;
void main()
{void count(char[]);
	char text[80];
	printf("input string:\n");
	gets(text);
	printf("string:");
	puts(text);
	letter=0;
	digit=0;
	space=0;
	others=0;
	count(text);
	printf("letter:%d,digit:%d,space:%d,others:%d\n",letter,digit,space,others);
}

void count(char str[])
{
	int i;
	for(i=0;str[i]!='\0';i++)
	if((str[i]>='a'&&str[i]<='z')||(str[i]>='A'&&str[i]<='Z'))
	letter++;
	else if(str[i]>='0'&&str[i]<='9')
	digit++;
	else if(str[i]==32)
	space++;
	else
	others++;
}