仓库管理，第一次做，能帮我看一下不

/*用链表实现学生成绩信息的管理*/
#include<stdio.h>
#include<stdlib.h>
#include<string.h>

struct stud_node {
	int num;
	char name[20];
	int score;
	struct stud_node* next;
};

struct stud_node* Create_stud_Doc(); /*新建链表*/
struct stud_node* InsertDoc(struct stud_node* head, struct stud_node* stud);/*插入操作*/
struct stud_node* DeleteDoc(struct stud_node* head,int num);/*删除操作*/
void Print_Stud_Doc(struct stud_node* head);/*遍历*/
void search_num(struct stud_node* head);/*按学号查找*/
void search_name(struct stud_node* head);/*按姓名查找*/
void search_score(struct stud_node* head);/*按分数查找*/

int main(void) {
	struct stud_node* head, * p;
	int choice, num, score;
	char name[20];
	int size = sizeof(struct stud_node);

	do {
		printf("1:Create\n");
		printf("2:Insert\n");
		printf("3:Delete\n");
		printf("4:Print\n");
		printf("5:search\n");
		printf("0:Exit\n");
		scanf("%d", &choice);
		switch(choice) {
			case 1:head = Create_stud_Doc();
				break;
			case 2:
				printf("Input num,name,score:");
				scanf("%d%s%d", &num, &name,&score);
				head = InsertDoc(head,p);
				break;
			case 3:
				printf("Input num:");
				scanf("%d", &num);
				head = DeleteDoc(head,num);
				break;
			case 4:Print_Stud_Doc(head);
				break;
			case 5:
				printf("5.1 按学号查找\n");
				printf("5.2 按姓名查找\n");
				printf("5.3 按分数查找\n");
				scanf("%d", &choice);
				if (choice == 5.1)
					search_num(head);
				else if (choice == 5.2)
					search_name(head);
				else if (choice == 5.3)
					search_score(head);
				break;
			case 0:break;
		}
	} while (choice!=0);
	return 0;
}

struct stud_node* Create_Stu_Doc()
{
	struct stud_node* head, * p;
	int num, score;
	char name[20];
	int size = sizeof(struct stud_node);
	head = NULL;
	printf("Input num, name and score:\n");
	scanf("%d %s %d", &num, &name, &score);
	while (num != 0) {
		p = (struct stu_node*)malloc(size);
		p->num = num;
		strcpy(p->name, name);
		p->score = score;
		head = InsertDoc(head, p);
		scanf("%d %s %d", &num, &name, &score);
	}
	return head;
}

void Print_Stu_Doc(struct stud_node* head)
{
	struct stud_node* ptr;
	if (head == NULL) {
		printf("\nNo Records\n");
		return;
	}
	printf("\nThe Students' Records Are:\n");
	printf("Num\t Name\t Score\n");
	for (ptr = head; ptr != NULL; ptr = ptr->next) {
		printf("%d\t%s\t%d\n", ptr->num, ptr->name, ptr->score);
	}
}

struct stud_node* DeleteDoc(struct stud_node* head, int num)
{
	struct stud_node* ptr1, * ptr2;
	while (head != NULL && head->num == num) {
		ptr2 = head;
		head = head->next;
		free(ptr2);
	}
	if (head == NULL)
		return NULL;
	ptr1 = head;
	ptr2 = head->next;
	while (ptr2 != NULL) {
		if (ptr2->num == num) {
			ptr1->next = ptr2->next;
			free(ptr2);
		}
		else {
			ptr1 = ptr2;
			ptr2 = ptr1->next;
		}
	}
	return head;
}

/*插入操作*/
struct stud_node* InsertDoc(struct stud_node* head, struct stud_node* stud) {
	struct stud_node* ptr, * ptr1, * ptr2;
	ptr2 = head;
	ptr = stud;  /*ptr指向新的待插入学生记录结点*/
	/*原链表为空时的插入*/
	if (head == NULL) {
		head = ptr;
		head->next = NULL;
	}
	else {
		while ((ptr->num > ptr2->num) && (ptr2->next != 0)) {
			ptr1 = ptr2;
			ptr2 = ptr2->next;
		}
		if (ptr->num <= ptr2->num) {
			if (head == ptr2) head = ptr;
			else ptr1->next = ptr;
			ptr->next = ptr2;
		}
		else {
			ptr2->next = ptr;
			ptr->next = NULL;
		}
	}
	return head;
}
void search_num(struct stud_node* head) {
	struct stud_node* q;
	int num;
	scanf("%d", &num);
	q = head->next;
	while (q) {
		if (num == q->num)
			printf("%d%s%d", q->num, q->name, q->score);
		else
			q = q->next;
	}
}
void search_name(struct stud_node* head) {
	struct stud_node  *q;
	char name[20];
	scanf("%s", &name);
	q = head->next;
	while (q) {
		if (strcmp(name, q->name) == 0)
			printf("%d%s%d", q->num, q->name, q->score);
		else
			q = q->next;
	}
}
void search_score(struct stud_node* head) {
	struct stud_node* q;
	int score;
	scanf("%d", &score);
	q = head->next;
	while (q) {
		if (score == q->score)
			printf("%d%s%d", q->num, q->name, q->score);
		else
			q = q->next;
	}
}

哪位大哥能帮我看一下，第一次做课程设计一直没法通过

有两处错误：

第一处：63行此处函数名字应与前面11行保持一直应为：Create_stud_Doc

第二处：83行此处函数名字应与前面14行保持一直应为：Print_Stud_Doc

修改完成后便可以运行出首页结果：