parent
403b71a214
commit
06d00f2933
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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// 定义学生结构体
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struct Student {
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char *id;
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char *clas;
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char *name;
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double score1;
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double score2;
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double score3;
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double score;
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};
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// 函数声明
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void displayMenu();
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void inputStudentInfo(struct Student students[], int *count);
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void outputStudentInfo(struct Student students[], int count);
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void orderStudentInfo(struct Student students[], int count);
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void insertStudentInfo(struct Student students[], int *count);
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void deleteStudentInfo(struct Student students[], int *count);
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void modifyStudentInfo(struct Student students[], int count);
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void searchStudentInfo(struct Student students[], int count);
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int main() {
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struct Student students[100];
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int count = 0;
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int option;
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do {
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displayMenu();
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scanf("%d", &option);
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switch (option) {
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case 1:
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inputStudentInfo(students, &count);
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break;
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case 2:
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outputStudentInfo(students, count);
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break;
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case 3:
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orderStudentInfo(students, count);
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break;
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case 4:
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insertStudentInfo(students, &count);
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break;
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case 5:
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deleteStudentInfo(students, &count);
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break;
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case 6:
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modifyStudentInfo(students, count);
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break;
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case 7:
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searchStudentInfo(students, count);
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break;
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case 8:
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printf("Exiting the program.\n");
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break;
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default:
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printf("Invalid option. Please try again.\n");
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}
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} while (option!= 8);
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return 0;
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}
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// 显示菜单
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void displayMenu() {
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printf(" 1. Input\n");
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printf(" 2. Output\n");
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printf(" 3. Order\n");
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printf(" 4. Insert\n");
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printf(" 5. Delete\n");
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printf(" 6. Modify\n");
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printf(" 7. Search\n");
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printf(" 8. Quit\n");
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printf("Please enter your option: ");
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}
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// 录入学生信息
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void inputStudentInfo(struct Student students[], int *count) {
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for (int i = *count; i < *count + 3; i++) {
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students[i].id = (char *)malloc(sizeof(char) * 10);
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students[i].clas = (char *)malloc(sizeof(char) * 10);
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students[i].name = (char *)malloc(sizeof(char) * 20);
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printf("Please input student %d's id: ", i + 1);
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scanf("%s", students[i].id);
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printf("Please input student %d's class: ", i + 1);
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scanf("%s", students[i].clas);
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printf("Please input student %d's name: ", i + 1);
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scanf("%s", students[i].name);
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printf("Please input student %d's score1: ", i + 1);
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scanf("%lf", &students[i].score1);
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printf("Please input student %d's score2: ", i + 1);
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scanf("%lf", &students[i].score2);
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printf("Please input student %d's score3: ", i + 1);
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scanf("%lf", &students[i].score3);
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students[i].score = students[i].score1 + students[i].score2 + students[i].score3;
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}
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*count += 3;
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}
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// 输出学生信息
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void outputStudentInfo(struct Student students[], int count) {
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for (int i = 0; i < count; i++) {
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printf("%s %s %s %.1lf %.1lf %.1lf %.1lf\n", students[i].id, students[i].clas, students[i].name,
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students[i].score1, students[i].score2, students[i].score3, students[i].score);
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}
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}
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// 排序学生信息
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void orderStudentInfo(struct Student students[], int count) {
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for (int i = 0; i < count - 1; i++) {
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for (int j = 0; j < count - i - 1; j++) {
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if (strcmp(students[j].clas, students[j + 1].clas) > 0 ||
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(strcmp(students[j].clas, students[j + 1].clas) == 0 && students[j].score < students[j + 1].score)) {
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struct Student temp = students[j];
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students[j] = students[j + 1];
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students[j + 1] = temp;
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}
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}
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}
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outputStudentInfo(students, count);
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}
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// 插入学生信息
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void insertStudentInfo(struct Student students[], int *count) {
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struct Student newStudent;
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newStudent.id = (char *)malloc(sizeof(char) * 10);
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newStudent.clas = (char *)malloc(sizeof(char) * 10);
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newStudent.name = (char *)malloc(sizeof(char) * 20);
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printf("Please input the new student's id: ");
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scanf("%s", newStudent.id);
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printf("Please input the new student's class: ");
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scanf("%s", newStudent.clas);
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printf("Please input the new student's name: ");
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scanf("%s", newStudent.name);
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printf("Please input the new student's score1: ");
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scanf("%lf", &newStudent.score1);
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printf("Please input the new student's score2: ");
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scanf("%lf", &newStudent.score2);
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printf("Please input the new student's score3: ");
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scanf("%lf", &newStudent.score3);
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newStudent.score = newStudent.score1 + newStudent.score2 + newStudent.score3;
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int i;
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for (i = 0; i < *count; i++) {
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if (strcmp(students[i].clas, newStudent.clas) > 0 ||
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(strcmp(students[i].clas, newStudent.clas) == 0 && students[i].score < newStudent.score)) {
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break;
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}
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}
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for (int j = *count; j > i; j--) {
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students[j] = students[j - 1];
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}
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students[i] = newStudent;
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(*count)++;
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outputStudentInfo(students, *count);
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}
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// 删除学生信息
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void deleteStudentInfo(struct Student students[], int *count) {
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char idOrName[20];
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printf("Please input the id or name of the student to delete: ");
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scanf("%s", idOrName);
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int i;
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for (i = 0; i < *count; i++) {
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if (strcmp(students[i].id, idOrName) == 0 || strcmp(students[i].name, idOrName) == 0) {
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break;
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}
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}
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if (i == *count) {
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printf("Student not found.\n");
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} else {
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for (int j = i; j < *count - 1; j++) {
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students[j] = students[j + 1];
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}
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(*count)--;
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outputStudentInfo(students, *count);
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}
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}
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// 修改学生信息
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void modifyStudentInfo(struct Student students[], int count) {
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char id[10];
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printf("Please input the id of the student to modify: ");
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scanf("%s", id);
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int i;
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for (i = 0; i < count; i++) {
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if (strcmp(students[i].id, id) == 0) {
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break;
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}
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}
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if (i == count) {
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printf("Student not found.\n");
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} else {
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free(students[i].id);
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free(students[i].clas);
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free(students[i].name);
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students[i].id = (char *)malloc(sizeof(char) * 10);
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students[i].clas = (char *)malloc(sizeof(char) * 10);
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students[i].name = (char *)malloc(sizeof(char) * 20);
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printf("Please input the new class: ");
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scanf("%s", students[i].clas);
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printf("Please input the new name: ");
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scanf("%s", students[i].name);
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printf("Please input the new score1: ");
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scanf("%lf", &students[i].score1);
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printf("Please input the new score2: ");
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scanf("%lf", &students[i].score2);
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printf("Please input the new score3: ");
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scanf("%lf", &students[i].score3);
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students[i].score = students[i].score1 + students[i].score2 + students[i].score3;
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orderStudentInfo(students, count);
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}
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}
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// 查询学生信息
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void searchStudentInfo(struct Student students[], int count) {
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int option;
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printf("Please select the search option:\n");
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printf("1. Search by class range\n");
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printf("2. Search by id range\n");
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printf("3. Search by name prefix\n");
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printf("4. Search by total score\n");
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printf("5. Search by class and id range\n");
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scanf("%d", &option);
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switch (option) {
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case 1: {
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int startClass, endClass;
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printf("Please input the start class and end class (e.g., 11 13): ");
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scanf("%d %d", &startClass, &endClass);
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for (int i = 0; i < count; i++) {
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int classValue = atoi(students[i].clas);
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if (classValue >= startClass && classValue <= endClass) {
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printf("%s %s %s %.1lf %.1lf %.1lf %.1lf\n", students[i].id, students[i].clas, students[i].name,
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students[i].score1, students[i].score2, students[i].score3, students[i].score);
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}
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}
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break;
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}
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case 2: {
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char startId[10], endId[10];
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printf("Please input the start id and end id (e.g., 10001 10004): ");
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scanf("%s %s", startId, endId);
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for (int i = 0; i < count; i++) {
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if (strcmp(students[i].id, startId) >= 0 && strcmp(students[i].id, endId) <= 0) {
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printf("%s %s %s %.1lf %.1lf %.1lf %.1lf\n", students[i].id, students[i].clas, students[i].name,
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students[i].score1, students[i].score2, students[i].score3, students[i].score);
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}
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}
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break;
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}
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case 3: {
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char prefix[10];
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printf("Please input the name prefix (e.g., Zh): ");
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scanf("%s", prefix);
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for (int i = 0; i < count; i++) {
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if (strncmp(students[i].name, prefix, strlen(prefix)) == 0) {
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printf("%s %s %s %.1lf %.1lf %.1lf %.1lf\n", students[i].id, students[i].clas, students[i].name,
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students[i].score1, students[i].score2, students[i].score3, students[i].score);
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}
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}
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break;
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}
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case 4: {
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double minScore;
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printf("Please input the minimum total score: ");
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scanf("%lf", &minScore);
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for (int i = 0; i < count; i++) {
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if (students[i].score >= minScore) {
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printf("%s %s %s %.1lf %.1lf %.1lf %.1lf\n", students[i].id, students[i].clas, students[i].name,
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students[i].score1, students[i].score2, students[i].score3, students[i].score);
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}
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}
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break;
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}
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case 5: {
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int classValue;
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char startId[10], endId[10];
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printf("Please input the class and the start id and end id (e.g., 11 10001 10004): ");
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scanf("%d %s %s", &classValue, startId, endId);
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for (int i = 0; i < count; i++) {
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if (atoi(students[i].clas) == classValue &&
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strcmp(students[i].id, startId) >= 0 && strcmp(students[i].id, endId) <= 0) {
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printf("%s %s %s %.1lf %.1lf %.1lf %.1lf\n", students[i].id, students[i].clas, students[i].name,
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students[i].score1, students[i].score2, students[i].score3, students[i].score);
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}
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}
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break;
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}
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default:
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printf("Invalid search option.\n");
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}
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}
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