Update step4.c

main
pc9ha2xvl 8 months ago
parent 8205629c55
commit b3368bb6c3

@ -8,7 +8,7 @@ typedef struct {
float score3; float score3;
} Student; } Student;
// 函数声明
int compareStudents(const void *a, const void *b); int compareStudents(const void *a, const void *b);
void insertStudent(Student students[], int *size, Student newStudent); void insertStudent(Student students[], int *size, Student newStudent);
void printStudents(Student students[], int size); void printStudents(Student students[], int size);
@ -19,10 +19,10 @@ int main() {
{10002, 12, 77.9, 56.5, 87.5}, {10002, 12, 77.9, 56.5, 87.5},
{10003, 11, 92.5, 99.0, 60.5} {10003, 11, 92.5, 99.0, 60.5}
}; };
int size = 3; // 当前学生数量 int size = 3;
Student newStudent; Student newStudent;
// 输入新学生的信息
printf(""); printf("");
scanf("%d",&newStudent.id); scanf("%d",&newStudent.id);
printf(""); printf("");
@ -33,25 +33,24 @@ int main() {
scanf("%f",&newStudent.score2); scanf("%f",&newStudent.score2);
printf(""); printf("");
scanf("%f",&newStudent.score3); scanf("%f",&newStudent.score3);
// 检查学号是否已存在
int i; int i;
for (i = 0; i < size; i++) { for (i = 0; i < size; i++) {
if (students[i].id == newStudent.id) { if (students[i].id == newStudent.id) {
printf("学号 %d 已存在。\n", newStudent.id); printf(" %d \n", newStudent.id);
return 0; return 0;
} }
} }
// 插入新学生
insertStudent(students, &size, newStudent); insertStudent(students, &size, newStudent);
// 打印所有学生信息
printStudents(students, size); printStudents(students, size);
return 0; return 0;
} }
// 比较函数用于qsort
int compareStudents(const void *a, const void *b) { int compareStudents(const void *a, const void *b) {
Student *studentA = (Student *)a; Student *studentA = (Student *)a;
Student *studentB = (Student *)b; Student *studentB = (Student *)b;
@ -64,7 +63,7 @@ int compareStudents(const void *a, const void *b) {
} }
} }
// 插入新学生
void insertStudent(Student students[], int *size, Student newStudent) { void insertStudent(Student students[], int *size, Student newStudent) {
Student temp[*size + 1]; Student temp[*size + 1];
int i; int i;
@ -79,7 +78,6 @@ void insertStudent(Student students[], int *size, Student newStudent) {
(*size)++; (*size)++;
} }
// 打印学生信息
void printStudents(Student students[], int size) { void printStudents(Student students[], int size) {
int i; int i;
for (i = 0; i < size; i++) { for (i = 0; i < size; i++) {

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