meidick/学籍管理

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

// <20><><EFBFBD><EFBFBD>ѧ<EFBFBD><D1A7><EFBFBD>ṹ<EFBFBD><E1B9B9>
struct Student {
    char *id;
    char *clas;
    char *name;
    double score1;
    double score2;
    double score3;
    double score;
};

// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
void displayMenu();
void inputStudentInfo(struct Student students[], int *count);
void outputStudentInfo(struct Student students[], int count);
void orderStudentInfo(struct Student students[], int count);
void insertStudentInfo(struct Student students[], int *count);
void deleteStudentInfo(struct Student students[], int *count);
void modifyStudentInfo(struct Student students[], int count);
void searchStudentInfo(struct Student students[], int count);

int main() {
    struct Student students[100];
    int count = 0;
    int option;

    do {
        displayMenu();
        scanf("%d", &option);

        switch (option) {
            case 1:
                inputStudentInfo(students, &count);
                break;
            case 2:
                outputStudentInfo(students, count);
                break;
            case 3:
                orderStudentInfo(students, count);
                break;
            case 4:
                insertStudentInfo(students, &count);
                break;
            case 5:
                deleteStudentInfo(students, &count);
                break;
            case 6:
                modifyStudentInfo(students, count);
                break;
            case 7:
                searchStudentInfo(students, count);
                break;
            case 8:
                printf("Exiting the program.\n");
                break;
            default:
                printf("Invalid option. Please try again.\n");
        }
    } while (option!= 8);

    return 0;
}

// <20><>ʾ<EFBFBD>˵<EFBFBD>
void displayMenu() {
    printf("                             1. Input\n");
    printf("                             2. Output\n");
    printf("                             3. Order\n");
    printf("                             4. Insert\n");
    printf("                             5. Delete\n");
    printf("                             6. Modify\n");
    printf("                             7. Search\n");
    printf("                             8. Quit\n");
    printf("Please enter your option: ");
}

// ¼<><C2BC>ѧ<EFBFBD><D1A7><EFBFBD><EFBFBD>Ϣ
void inputStudentInfo(struct Student students[], int *count) {
    for (int i = *count; i < *count + 3; i++) {
        students[i].id = (char *)malloc(sizeof(char) * 10);
        students[i].clas = (char *)malloc(sizeof(char) * 10);
        students[i].name = (char *)malloc(sizeof(char) * 20);

        printf("Please input student %d's id: ", i + 1);
        scanf("%s", students[i].id);

        printf("Please input student %d's class: ", i + 1);
        scanf("%s", students[i].clas);

        printf("Please input student %d's name: ", i + 1);
        scanf("%s", students[i].name);

        printf("Please input student %d's score1: ", i + 1);
        scanf("%lf", &students[i].score1);

        printf("Please input student %d's score2: ", i + 1);
        scanf("%lf", &students[i].score2);

        printf("Please input student %d's score3: ", i + 1);
        scanf("%lf", &students[i].score3);

        students[i].score = students[i].score1 + students[i].score2 + students[i].score3;
    }
    *count += 3;
}

// <20><><EFBFBD><EFBFBD>ѧ<EFBFBD><D1A7><EFBFBD><EFBFBD>Ϣ
void outputStudentInfo(struct Student students[], int count) {
    for (int i = 0; i < count; i++) {
        printf("%s %s %s %.1lf %.1lf %.1lf %.1lf\n", students[i].id, students[i].clas, students[i].name,
               students[i].score1, students[i].score2, students[i].score3, students[i].score);
    }
}

// <20><><EFBFBD><EFBFBD>ѧ<EFBFBD><D1A7><EFBFBD><EFBFBD>Ϣ
void orderStudentInfo(struct Student students[], int count) {
    for (int i = 0; i < count - 1; i++) {
        for (int j = 0; j < count - i - 1; j++) {
            if (strcmp(students[j].clas, students[j + 1].clas) > 0 ||
                (strcmp(students[j].clas, students[j + 1].clas) == 0 && students[j].score < students[j + 1].score)) {
                struct Student temp = students[j];
                students[j] = students[j + 1];
                students[j + 1] = temp;
            }
        }
    }
    outputStudentInfo(students, count);
}

// <20><><EFBFBD><EFBFBD>ѧ<EFBFBD><D1A7><EFBFBD><EFBFBD>Ϣ
void insertStudentInfo(struct Student students[], int *count) {
    struct Student newStudent;
    newStudent.id = (char *)malloc(sizeof(char) * 10);
    newStudent.clas = (char *)malloc(sizeof(char) * 10);
    newStudent.name = (char *)malloc(sizeof(char) * 20);

    printf("Please input the new student's id: ");
    scanf("%s", newStudent.id);

    printf("Please input the new student's class: ");
    scanf("%s", newStudent.clas);

    printf("Please input the new student's name: ");
    scanf("%s", newStudent.name);

    printf("Please input the new student's score1: ");
    scanf("%lf", &newStudent.score1);

    printf("Please input the new student's score2: ");
    scanf("%lf", &newStudent.score2);

    printf("Please input the new student's score3: ");
    scanf("%lf", &newStudent.score3);

    newStudent.score = newStudent.score1 + newStudent.score2 + newStudent.score3;

    int i;
    for (i = 0; i < *count; i++) {
        if (strcmp(students[i].clas, newStudent.clas) > 0 ||
            (strcmp(students[i].clas, newStudent.clas) == 0 && students[i].score < newStudent.score)) {
            break;
        }
    }

    for (int j = *count; j > i; j--) {
        students[j] = students[j - 1];
    }

    students[i] = newStudent;
    (*count)++;
    outputStudentInfo(students, *count);
}

// ɾ<><C9BE>ѧ<EFBFBD><D1A7><EFBFBD><EFBFBD>Ϣ
void deleteStudentInfo(struct Student students[], int *count) {
    char idOrName[20];
    printf("Please input the id or name of the student to delete: ");
    scanf("%s", idOrName);

    int i;
    for (i = 0; i < *count; i++) {
        if (strcmp(students[i].id, idOrName) == 0 || strcmp(students[i].name, idOrName) == 0) {
            break;
        }
    }

    if (i == *count) {
        printf("Student not found.\n");
    } else {
        for (int j = i; j < *count - 1; j++) {
            students[j] = students[j + 1];
        }
        (*count)--;
        outputStudentInfo(students, *count);
    }
}

// <20>޸<EFBFBD>ѧ<EFBFBD><D1A7><EFBFBD><EFBFBD>Ϣ
void modifyStudentInfo(struct Student students[], int count) {
    char id[10];
    printf("Please input the id of the student to modify: ");
    scanf("%s", id);

    int i;
    for (i = 0; i < count; i++) {
        if (strcmp(students[i].id, id) == 0) {
            break;
        }
    }

    if (i == count) {
        printf("Student not found.\n");
    } else {
        free(students[i].id);
        free(students[i].clas);
        free(students[i].name);

        students[i].id = (char *)malloc(sizeof(char) * 10);
        students[i].clas = (char *)malloc(sizeof(char) * 10);
        students[i].name = (char *)malloc(sizeof(char) * 20);

        printf("Please input the new class: ");
        scanf("%s", students[i].clas);

        printf("Please input the new name: ");
        scanf("%s", students[i].name);

        printf("Please input the new score1: ");
        scanf("%lf", &students[i].score1);

        printf("Please input the new score2: ");
        scanf("%lf", &students[i].score2);

        printf("Please input the new score3: ");
        scanf("%lf", &students[i].score3);

        students[i].score = students[i].score1 + students[i].score2 + students[i].score3;

        orderStudentInfo(students, count);
    }
}

// <20><>ѯѧ<D1AF><D1A7><EFBFBD><EFBFBD>Ϣ
void searchStudentInfo(struct Student students[], int count) {
    int option;
    printf("Please select the search option:\n");
    printf("1. Search by class range\n");
    printf("2. Search by id range\n");
    printf("3. Search by name prefix\n");
    printf("4. Search by total score\n");
    printf("5. Search by class and id range\n");
    scanf("%d", &option);

    switch (option) {
        case 1: {
            int startClass, endClass;
            printf("Please input the start class and end class (e.g., 11 13): ");
            scanf("%d %d", &startClass, &endClass);

            for (int i = 0; i < count; i++) {
                int classValue = atoi(students[i].clas);
                if (classValue >= startClass && classValue <= endClass) {
                    printf("%s %s %s %.1lf %.1lf %.1lf %.1lf\n", students[i].id, students[i].clas, students[i].name,
                           students[i].score1, students[i].score2, students[i].score3, students[i].score);
                }
            }
            break;
        }
        case 2: {
            char startId[10], endId[10];
            printf("Please input the start id and end id (e.g., 10001 10004): ");
            scanf("%s %s", startId, endId);

            for (int i = 0; i < count; i++) {
                if (strcmp(students[i].id, startId) >= 0 && strcmp(students[i].id, endId) <= 0) {
                    printf("%s %s %s %.1lf %.1lf %.1lf %.1lf\n", students[i].id, students[i].clas, students[i].name,
                           students[i].score1, students[i].score2, students[i].score3, students[i].score);
                }
            }
            break;
        }
        case 3: {
            char prefix[10];
            printf("Please input the name prefix (e.g., Zh): ");
            scanf("%s", prefix);

            for (int i = 0; i < count; i++) {
                if (strncmp(students[i].name, prefix, strlen(prefix)) == 0) {
                    printf("%s %s %s %.1lf %.1lf %.1lf %.1lf\n", students[i].id, students[i].clas, students[i].name,
                           students[i].score1, students[i].score2, students[i].score3, students[i].score);
                }
            }
            break;
        }
        case 4: {
            double minScore;
            printf("Please input the minimum total score: ");
            scanf("%lf", &minScore);

            for (int i = 0; i < count; i++) {
                if (students[i].score >= minScore) {
                    printf("%s %s %s %.1lf %.1lf %.1lf %.1lf\n", students[i].id, students[i].clas, students[i].name,
                           students[i].score1, students[i].score2, students[i].score3, students[i].score);
                }
            }
            break;
        }
        case 5: {
            int classValue;
            char startId[10], endId[10];
            printf("Please input the class and the start id and end id (e.g., 11 10001 10004): ");
            scanf("%d %s %s", &classValue, startId, endId);

            for (int i = 0; i < count; i++) {
                if (atoi(students[i].clas) == classValue &&
                    strcmp(students[i].id, startId) >= 0 && strcmp(students[i].id, endId) <= 0) {
                    printf("%s %s %s %.1lf %.1lf %.1lf %.1lf\n", students[i].id, students[i].clas, students[i].name,
                           students[i].score1, students[i].score2, students[i].score3, students[i].score);
                }
            }
            break;
        }
        default:
            printf("Invalid search option.\n");
    }
}