diff --git a/学籍管理系统5.cpp b/学籍管理系统5.cpp new file mode 100644 index 0000000..b7fb393 --- /dev/null +++ b/学籍管理系统5.cpp @@ -0,0 +1,94 @@ +#include +#include +#include + +// 定义学生结构体,包含学号、班级、姓名以及三门课程成绩 +typedef struct Student { + char id[20]; // 使用字符串存储学号,便于处理用户输入(可能是学号或姓名) + int class_num; + char name[20]; + double score1; + double score2; + double score3; +} Student; + +// 交换两个学生结构体的函数 +void swap(Student *a, Student *b) { + Student temp = *a; + *a = *b; + *b = temp; +} + +// 计算学生总成绩的函数,方便后续比较排序(虽然本题删除操作未直接用到,但保持代码完整性) +double totalScore(const Student *s) { + return s->score1 + s->score2 + s->score3; +} + +// 根据输入的学号或姓名查找学生在数组中的索引位置,若没找到返回 -1 +int findStudentIndex(Student students[], int n, char target[20]) { + for (int i = 0; i < n; i++) { + if (strcmp(students[i].id, target) == 0 || strcmp(students[i].name, target) == 0) { + return i; + } + } + return -1; +} + +// 删除指定学号或姓名的学生信息,并保持数组有序 +void deleteStudent(Student students[], int *n, char target[20]) { + int index = findStudentIndex(students, *n, target); + if (index!= -1) { + for (int i = index; i < *n - 1; i++) { + students[i] = students[i + 1]; + } + (*n)--; + } +} + +// 打印学生数组信息 +void printStudents(Student students[], int n) { + for (int i = 0; i < n; i++) { + printf("%s %d %s %.1lf %.1lf %.1lf\n", students[i].id, students[i].class_num, students[i].name, + students[i].score1, students[i].score2, students[i].score3); + } +} + +int main() { + Student students[100]; // 假设最多存储100个学生信息,可根据实际情况调整大小 + int num_students = 3; // 初始已有3个学生信息 + + // 静态初始化已有三个学生信息(按题目给定示例) + Student s1 = {"10001", 11, "Zhang", 99.5, 88.5, 89.5}; + Student s2 = {"10002", 12, "Yang", 77.9, 56.5, 87.5}; + Student s3 = {"10003", 11, "Liang", 92.5, 99.0, 60.5}; + students[0] = s1; + students[1] = s2; + students[2] = s3; + + char input[20]; + printf("please input:\n"); + scanf("%s", input); + + // 查找要删除的学生是否存在 + int index = findStudentIndex(students, num_students, input); + if (index == -1) { + // 如果学生不存在,直接输出原有学生信息并结束程序 + printStudents(students, num_students); + return 0; + } + + // 如果学生存在,询问是否确定删除 + printf("Are you sure(yes/no)?\n"); + char choice[10]; + scanf("%s", choice); + if (strcmp(choice, "n") == 0) { + // 用户输入 n,输出所有学生信息后结束程序 + printStudents(students, num_students); + } else if (strcmp(choice, "y") == 0) { + // 用户输入 y,执行删除操作并输出剩余学生信息 + deleteStudent(students, &num_students, input); + printStudents(students, num_students); + } + + return 0; +} \ No newline at end of file