func putstr(char[] str) {
	int i := 0;
	while (str[i] != '\0') {
		putc(str[i]);
		i = i + 1;
	}
}

func int main() {
	char[] str := new char[100];
	str[0] = 'k';
	str[1] = 'a';
	str[2] = str[1];
	str[3] = 's';
	str[4] = '\n';
	str[5] = '\0';
	putstr(str);
	return 0;
}