std::string make_triangles() {
	uint8_t plus_1 = 1; //first number of +'s
	uint8_t spaces = 32; //space number (based on number of periods you gave in the post)
	uint8_t plus_2 = 10; //second number of +'s

	std::string result = ""; //final return result

	for (uint8_t i = 0; i < 10; ++i) {

		result.insert(result.length(), plus_1, '+');
		result.insert(result.length(), spaces, ' ');
		result.insert(result.length(), plus_2, '+');
		result.append("\n");

		++plus_1, --plus_2, --spaces;
	}

	return result;
}