void create_file(const char* filename) {
	FILE* file = fopen(filename, "wb");   
	if (file != NULL) { 
		for(int i = 0; i < 1000000000; i++) {
			fprintf(file, "%d\n", rand());
		}
		fclose(file);
	}
}

void read_speed(const char* filename) {
	int count = 0;
	clock_t start = clock();
	FILE* file = fopen(filename, "rb");   
	if (file != NULL) { 
		int n = 0;
		bool store = false;
		char buffer[1024 * 64];
		size_t bytesRead = 0;
		while ((bytesRead = fread(buffer, 1, sizeof(buffer), file)) > 0) {
			count++;
		}
		fclose(file);
	}
	printf("Count %d blocks Time %f sec.\n", count, (double)(clock() - start) / CLOCKS_PER_SEC);
}

void ifstream_speed(const char* filename)
{
	clock_t start = clock();
	std::ifstream ifs(filename, std::ios::binary);
	char buff[1024 * 64];
	int count = 0;

	while(ifs){
		ifs.read(buff, sizeof(buff));
		count++;
	}
	ifs.close();
	printf("Count %d blocks Time %f sec.\n", count, (double)(clock() - start) / CLOCKS_PER_SEC);
}

void read_ints(const char* filename) {
	int count = 0;
	clock_t start = clock();
	FILE* file = fopen(filename, "rb");   
	if (file != NULL) { 
		int n = 0;
		bool store = false;
		char buffer[1024 * 64];
		size_t bytesRead = 0;
		while ((bytesRead = fread(buffer, 1, sizeof(buffer), file)) > 0) {
			for(size_t i = 0; i < bytesRead; i++) {
				// считаем что все числа целые и разделены любыми разделителями
				if(buffer[i] >= '0' && buffer[i] <= '9') {
					n = n * 10 + buffer[i] - '0';
					store = true;
				} else if(store) {
					// тут сохраняем результат
					//printf("%d\n", n);
					count++;
					store = false;
					n = 0;
				}
			}
		}
		fclose(file);
	}
	printf("Read %d numbers Time %f sec.\n", count, (double)(clock() - start) / CLOCKS_PER_SEC);
}