[COS PRO 2급] 4차 7번_오른 점수와 떨어진 점수 구하기 (C/C++)

 

 

구름에듀 4차 7번 문제

 

 

 

 

 

 

 

 

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주어진 코드

#include <stdio.h>
#include <stdbool.h>
#include <stdlib.h>

int func_a(int scores1[], int scores2[], int scores_len) {
    int answer = 0;
    for (int i = 0; i < scores_len; i++)
        if (answer < scores2[i] - scores1[i])
            answer = scores2[i] - scores1[i];
    return answer;
}

int func_b(int scores1[], int scores2[], int scores_len) {
    int answer = 0;
    for (int i = 0; i < scores_len; i++)
        if (answer > scores2[i] - scores1[i])		//중간점수 - 기말점수
            answer = scores2[i] - scores1[i];
    return answer;
}
int* solution(int mid_scores[], int mid_scores_len, int final_scores[], int final_scores_len) {
    int* answer = (int*)malloc(sizeof(int) * 2);
    answer[0] = func_a(mid_scores, final_scores, mid_scores_len);
    answer[1] = func_b(final_scores, mid_scores, mid_scores_len);   //중간점수 - 기말점수
    return answer;
}
int main() {
    int mid_scores[] = { 20, 50, 40 };
    int final_scores[] = { 10, 50, 70 };
    int* ret = solution(mid_scores, 3, final_scores, 3);

    printf("solution 함수의 반환 값은 [");
    for (int i = 0; i < 2; i++) {
        if (i != 0) printf(", ");
        printf("%d", ret[i]);
    }
    printf("] 입니다.\n");
}

 

 

 

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완성 코드

#include <stdio.h>
#include <stdbool.h>
#include <stdlib.h>

int func_a(int scores1[], int scores2[], int scores_len) {
    int answer = 0;
    for (int i = 0; i < scores_len; i++)
        if (answer < scores2[i] - scores1[i])
            answer = scores2[i] - scores1[i];
    return answer;
}

int func_b(int scores1[], int scores2[], int scores_len) {
    int answer = 0;
    for (int i = 0; i < scores_len; i++)
        if (answer > scores1[i] - scores2[i])
            answer = scores1[i] - scores2[i];
    return answer;
}
int* solution(int mid_scores[], int mid_scores_len, int final_scores[], int final_scores_len) {
    int* answer = (int*)malloc(sizeof(int) * 2);
    answer[0] = func_a(mid_scores, final_scores, mid_scores_len);
    answer[1] = func_b(final_scores, mid_scores, mid_scores_len);    //기말점수 - 중간점수
    return answer;
}
int main() {
    int mid_scores[] = { 20, 50, 40 };
    int final_scores[] = { 10, 50, 70 };
    int* ret = solution(mid_scores, 3, final_scores, 3);

    printf("solution 함수의 반환 값은 [");
    for (int i = 0; i < 2; i++) {
        if (i != 0) printf(", ");
        printf("%d", ret[i]);
    }
    printf("] 입니다.\n");
}

 

answer[1] = func_b(mid_scores, final_scores, mid_scores_len);
을 실행하게 되면, 매개변수의 순서에 따라 중간고사 점수 - 기말고사 점수가 계산된다.
하지만 문제에서 원하는 값은 기말 - 중간의 값이므로
매개변수의 순서를 바꾸어야 한다.

answer[1] = func_b(mid_scores, final_scores, mid_scores_len);
-> answer[1] = func_b(final_scores, mid_scores, mid_scores_len);

예시

mid_scores	mid_scores_len	final_scores	final_scores_len	return
[20,50,40]	3	[10,50,70]	3	[30,-10]

 

 

 

 

 

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GroomEdu

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