word.c

unix环境下实现的cmm语言编译器

/*word.c:统计输入的行数、单词与字符数*/
int getchar();
int printf(char *fmt, int, int, int);
int main()
{
	int c, nl, nw, nc, state;
	
	state = 0;
	nl = nw = nc = 0;
	while ((c = getchar()) != -1) {
		nc = nc + 1;
		if (c == '\n')
			nl = nl + 1;
		else if (c == ' ') 
			state = 0;
		else if (c == '\n')
			state = 0;
		else if (c == '\t')
			state = 0;
		else if (state == 0) {
			state = 1;
			nw = nw + 1;
		}
	}
	printf("%d %d %d\n", nl, nw, nc);
}