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#include <stdio.h>
#include <string.h>
#define MAX_STUDENTS 100
typedef struct {
int id;
int class;
char name[20];
float scores[3];
float total;
} Student;
Student students[MAX_STUDENTS];
int studentCount = 0;
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
void inputAndSortStudents();
int compareStudents(const void *a, const void *b);
void queryStudents();
void printStudents(Student *student);
int main() {
inputAndSortStudents();
queryStudents();
return 0;
}
void addStudent(int id, int class, char *name, float score1, float score2, float score3) {
if (studentCount < MAX_STUDENTS) {
students[studentCount].id = id;
students[studentCount].class = class;
strcpy(students[studentCount].name, name);
students[studentCount].scores[0] = score1;
students[studentCount].scores[1] = score2;
students[studentCount].scores[2] = score3;
students[studentCount].total = score1 + score2 + score3;
studentCount++;
}
}
void inputAndSortStudents() {
// <20><><EFBFBD><EFBFBD>Ӧ<EFBFBD><D3A6><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>ѭ<EFBFBD><D1AD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѧ<EFBFBD><D1A7><EFBFBD><EFBFBD>Ϣ
addStudent(10001, 11, "Zhang", 99.5, 88.5, 89.5);
addStudent(10002, 12, "Yang", 77.9, 56.5, 87.5);
addStudent(10003, 11, "Liang", 92.5, 99.0, 60.5);
addStudent(10004, 11,"Cai", 89.6, 56.9, 90.5);
addStudent(10005, 14, "Fu", 55.6, 67.9, 98.9);
addStudent(10006, 12, "Mao", 22.1, 45.9, 99.2);
addStudent(10007, 13, "Zhan", 35.6, 67.9, 88.0);
// <20><><EFBFBD><EFBFBD>ѧ<EFBFBD><D1A7><EFBFBD><EFBFBD>Ϣ
qsort(students, studentCount, sizeof(Student), compareStudents);
}
int compareStudents(const void *a, const void *b) {
Student *studentA = (Student *)a;
Student *studentB = (Student *)b;
if (studentA->class != studentB->class) {
return studentA->class - studentB->class;
}
return (studentB->total - studentA->total); // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
}
void queryStudents() {
int queryType;
float minScore;
char namePattern[20];
int classStart, classEnd, idStart, idEnd;
printf("Enter query type (1: class range, 2: student ID range, 3: name pattern, 4: total score): ");
scanf("%d", &queryType);
switch (queryType) {
case 1:
printf("Enter class range (e.g., 11-13): ");
scanf("%d-%d", &classStart, &classEnd);
int i;
for (i = 0; i < studentCount; i++) {
if (students[i].class >= classStart && students[i].class <= classEnd) {
printStudents(&students[i]);
}
}
break;
case 2:
printf("Enter student ID range (e.g., 10001-10004): ");
scanf("%d-%d", &idStart, &idEnd);
for (i = 0; i < studentCount; i++) {
if (students[i].id >= idStart && students[i].id <= idEnd) {
printStudents(&students[i]);
}
}
break;
case 3:
printf("Enter name pattern (e.g., Zh*): ");
scanf("%s", namePattern);
for (i = 0; i < studentCount; i++) {
if (strstr(students[i].name, namePattern) != NULL) {
printStudents(&students[i]);
}
}
break;
case 4:
printf("Enter minimum total score: ");
scanf("%f", &minScore);
for (i = 0; i < studentCount; i++) {
if (students[i].total >= minScore) {
printStudents(&students[i]);
}
}
break;
default:
printf("Invalid query type.\n");
break;
}
}
void printStudents(Student *student) {
printf("%d %d %s %.1f %.1f %.1f\n", student->id, student->class, student->name,
student->scores[0], student->scores[1], student->scores[2]);
}