maxline.c

unix环境下实现的cmm语言编译器

/*maxline.c:输出输入中最长的行*/
int getline(char s[], int lim);
void copy(char to[], char from[]);
int printf(char *fmt, char *);
int getchar();
int main(void)
{
	int len;
	int max;
	char line[1000];
	char longest[1000];

	max = 0;
	while ((len = getline(line, sizeof line)) > 0)
		if (len > max) {
			max = len;
			copy(longest, line);
		}
	if (max > 0)
		printf("%s", longest);
	return 0;
}


/*copy:将from复制到to;*/
void copy(char to[], char from[])
{
	int i = 0;
	
	while ((to[i] = from[i]) != 0)
		i = i + 1;
}