배열 안의 인스턴스 서로 비교

 

//15X^11 + 13X^6 + 7X^2 + 6X + 4와 14X ^ 13 + 11X ^ 11 + 10X ^ 10 + 5X + 1 을 더하세용

struct homework1 {
	int num;
	int square;
};

int main(void) {
	struct homework1 homework1[4] = { {15,11}, {13, 6}, {7,2}, {1, 4} };
	struct homework1 homework2[4] = { {14,13}, {11, 11}, {10,10}, {5, 1} };
 
	int index1 = 0;
	int index2 = 0;


	while (1) {

		if (index1 == 3 && index2 == 3) {
			break;
		}

		if (homework1[index1].square < homework2[index2].square) {
			printf("%dX^%d + ", homework2[index2].num, homework2[index2].square);
			index2++;
		}

		else if (homework1[index1].square > homework2[index2].square) {
			printf("%dX^%d + ", homework1[index1].num, homework1[index1].square);
			index1++;
		}

		else {
			printf("%dX^%d + ", (homework1[index1].num + homework2[index2].num), homework1[index1].square);
			index1++;
			index2++;
		}

	}

}