补全以下代码：#include <stdio.h> #include <stdlib.h> #include <string.h> struct stu{ char name[20]; int no; struct stu *next; }; int myCreate(struct stu *head,int m); void show(struct stu *head); struct stu * myIndex(struct stu *head,char *s); int myDel(struct stu *head,char *s); int main() { struct stu head; struct stu *p; char name[20]; int m; scanf("%d", &m);// 输入m，代表结点个数 if(myCreate(&head,m)==1)//如果创建成功 { printf("created...\n"); show(&head);//显示所有结点的信息 scanf("%s",name);//输入要查找的姓名 if((p=myIndex(&head,name))!=NULL){//如果找到了显示信息 printf("%s %d\n",p->name,p->no); } else printf("not found.\n"); scanf("%s",name);//输入要删除的姓名 if(myDel(&head,name)==1) printf("deleted.\n"); else printf("not found.\n"); } else printf("create failure."); return 0; }

代码如下：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

struct stu{
    char name[20];
    int no;
    struct stu *next;
};

int myCreate(struct stu *head, int m);
void show(struct stu *head);
struct stu * myIndex(struct stu *head, char *s);
int myDel(struct stu *head, char *s);

int main() {
    struct stu head;
    struct stu *p;
    char name[20];
    int m;
    scanf("%d", &m); // 输入m，代表结点个数
    if(myCreate(&head, m) == 1) { //如果创建成功
        printf("created...\n");
        show(&head); //显示所有结点的信息
        scanf("%s", name); //输入要查找的姓名
        if((p = myIndex(&head, name)) != NULL) { //如果找到了显示信息
            printf("%s %d\n", p->name, p->no);
        } else {
            printf("not found.\n");
        }
        scanf("%s", name); //输入要删除的姓名
        if(myDel(&head, name) == 1) {
            printf("deleted.\n");
        } else {
            printf("not found.\n");
        }
    } else {
        printf("create failure.");
    }
    return 0;
}

int myCreate(struct stu *head, int m) {
    struct stu *p, *q;
    int i;
    p = head;
    for(i = 0; i < m; i++) {
        q = (struct stu*)malloc(sizeof(struct stu));
        if(q == NULL) {
            return 0;
        }
        printf("input %dth name and number:\n", i+1);
        scanf("%s %d", q->name, &(q->no));
        p->next = q;
        p = p->next;
    }
    p->next = NULL;
    return 1;
}

void show(struct stu *head) {
    struct stu *p;
    p = head->next;
    while(p != NULL) {
        printf("%s %d\n", p->name, p->no);
        p = p->next;
    }
}

struct stu * myIndex(struct stu *head, char *s) {
    struct stu *p;
    p = head->next;
    while(p != NULL) {
        if(strcmp(p->name, s) == 0) {
            return p;
        }
        p = p->next;
    }
    return NULL;
}

int myDel(struct stu *head, char *s) {
    struct stu *p, *q;
    p = head;
    q = head->next;
    while(q != NULL) {
        if(strcmp(q->name, s) == 0) {
            p->next = q->next;
            free(q);
            return 1;
        }
        p = q;
        q = q->next;
    }
    return 0;
}