xjgl/step5.c

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

#define N 3
#define MAX_NAME_LENGTH 20

struct student {
    int id;
    int clas;
    char name[MAX_NAME_LENGTH];
    float math, physics, english, total;
};

void displayStudents(struct student stu[], int size) {
    printf("学号\t班级\t姓名\t数学\t物理\t英语\t总成绩\n");
    for (int i = 0; i < size; i++) {
        printf("%d\t%d\t%s\t%.1f\t%.1f\t%.1f\t%.1f\n",
            stu[i].id, stu[i].clas, stu[i].name, stu[i].math, stu[i].physics, stu[i].english, stu[i].total);
    }
    printf("\n");
}

void deleteStudent(struct student stu[], int* size, int index) {
    for (int i = index; i < *size - 1; i++) {
        stu[i] = stu[i + 1];
    }
    (*size)--;
}

int main() {
    struct student stu[N] = {
        {10001, 11, "Zhang", 99.5, 88.5, 89.5},
        {10002, 12, "Yang", 77.9, 56.5, 87.5},
        {10003, 11, "Liang", 92.5, 99.0, 60.5}
    };

    int size = N;

    printf("初始学生信息：\n");
    displayStudents(stu, size);

    char userInput[MAX_NAME_LENGTH];
    int deleteIndex = -1;

    printf("请输入要删除的学生的学号或姓名：");
    scanf("%s", userInput);

    for (int i = 0; i < size; i++) {
        if (strcmp(stu[i].name, userInput) == 0 || stu[i].id == atoi(userInput)) {
            deleteIndex = i;
            break;
        }
    }

    if (deleteIndex == -1) {
        printf("未找到匹配的学生信息，程序退出。\n");
        return 0;
    }
    else {
        printf("找到匹配的学生信息，删除该学生。\n");
        deleteStudent(stu, &size, deleteIndex);
    }

    char choice;
    printf("Are you sure(y/n)? ");
    scanf(" %c", &choice);

    if (choice == 'n') {
        // 用户选择不删除，输出排序后的学生信息并退出程序
        displayStudents(stu, size);
    }
    else if (choice == 'y') {
        // 用户选择删除，直接退出程序
        printf("程序结束。\n");
    }
    else {
        // 无效输入，输出排序后的学生信息并退出程序
        printf("无效输入，输出排序后的学生信息。\n");
        displayStudents(stu, size);
    }

    return 0;
}