用dev時鏈錶輸出出現亂碼

修改如下，供參考：

#include<stdio.h>#include<stdlib.h>#include <cstddef>#include <windows.h>typedef struct link_list{ int num; char sex[20]; char name[30]; struct link_list* next;}STU;void creat(STU* head) //(創建鏈錶){ int n; STU* p = NULL, * q = head; while (1)//(scanf("%d", &n), n >= 0) { printf("請輸入學號(-1:結束輸入):\n"); scanf("%d", &n); if (n < 0) break; p = (STU*)malloc(sizeof(STU)); p->num = n; printf("請輸入性別 姓名:\n"); scanf("%s%s", p->sex, p->name); q->next = p; q = p; } q->next = NULL;}void print(STU* head)//(輸出鏈錶） { head = head->next; //修改 while (head != NULL) { printf("\n%d %s %s\n", head->num, head->sex, head->name); head = head->next; }}STU* search(STU* head, int n)//(查找鏈錶(輸入學號)) { head = head->next; //修改 while (head != NULL) { if (head->num == n) { //print(head); printf("\n%d %s %s\n", head->num, head->sex, head->name); return head; } head = head->next; } if (!head) printf("未找到學號為:%d 的記錄！\n", n); return NULL;}void charu(STU* head, int n)//(插入鏈錶(輸入學號，插在序號前)){ STU* b = head->next; while (b && b->num != n) { head = b; //修改 b = b->next; } if (!b) printf("未找到待插入的學號！\n"); else{ STU* x = (STU*)malloc(sizeof(STU)); printf("請輸入新插入的學號 性別 姓名:\n"); scanf("%d %s %s", &x->num, x->sex, x->name); x->next = b; head->next = x; }}void deleted(STU* head, int n)//删除鏈錶（輸入學號）{ STU* p = head->next; while (p && p->num != n) { head = p, p = p->next; } if (p) { head->next = p->next; free(p); printf("删除成功！\n"); } else printf("未找到删除的學號記錄！\n"); //print(head);}int main(){ STU* head = (STU*)malloc(sizeof(STU)); creat(head); int requst = 1, n; while(requst){ printf("輸出鏈錶請扣1\n鏈錶插入請扣2\n鏈錶查找請扣3\n鏈錶删除請扣4\n輸入-1結束\n然後輸入學號，如果只需輸出鏈錶學號可隨意輸入"); scanf("%d%d", &requst, &n); switch (requst) { case 1:print(head); break; case 2:charu(head, n), print(head); break; case 3:search(head, n); break; case 4:deleted(head, n); break; default:requst = 0; break; } system("pause"); system("cls"); } return 0;}