C语言统计单词，空格，符号

#include 

int main()
{
	int word = 0;
	int space = 0;
	int mark = 0;
	char ch;
	
	while ((ch = getchar()) != '\n') {
		if ((ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z')
		word++;
		else if (ch == 32)	//ch = ' '空格的ASCII码是32
		space++;
		else
		mark++;
	}
	
	printf("word = %d, space = %d, mark = %d\n", word, space, mark);
	return 0;
}