#include <iostream>

bool isPrefix(const char* text, const char* pattern)
{
	if (*pattern == '\0')
		return true;
	return *text == *pattern && isPrefix(text + 1, pattern + 1);
}

bool searchInText(const char* text, const char* pattern)
{
	if (*text == '\0')
		return *pattern == '\0';

	return isPrefix(text, pattern) || searchInText(text + 1, pattern);
}


int main()
{
	char str[] = "hello friends how are you";
	char pattern[] = "friends!";

	std::cout << searchInText(str, pattern);
}