求助！这段代码有什么问题吗？为什么运行之后只显示黑屏？救救孩子！
#include<stdio.h>#include<stdlib.h>#include<string.h>typedef struct student{ int score; struct student*next;}L; L*create(int date){ L*p=(L*)malloc(sizeof(L)); if(p=NULL) { printf("malloc fair!"); return NULL; } memset(p,0,sizeof(L)); p->score=date; p->next=NULL;} void tailinsert( L *ph,L *c){ L*p=ph; while(p->next!=NULL) { p->next=p; } p->next=c;} void print(L*ph) { L*p=ph; p=p->next; while(p!=NULL) { printf("%d\n",&p->score); p=p->next; } printf("%d\n",&p->score); } void detect(L*ph,int date){ L*pr=ph; L*p=ph->next; if(p=NULL) { printf("数据为空，无法删除\n"); memset(p,0,sizeof(L)); }else while(1) { pr=p; p=p->next; if(p=NULL) { printf("找不到数据\n"); return; } else pr->next=p->next; free(p); }}int main(){ L*m=create(0); L*infor; while(1) { printf("请输入您想要的数据\n"); infor = (L*)malloc(sizeof(L)); infor->next = NULL; scanf("%d\n",&infor->score); tailinsert(m,infor); printf("要继续吗？\n1.yes\t2.no"); int i=getchar(); if(i==2) { break; } print(m);} printf("请输入要删除的数据\n"); scanf("%d\n",&infor->score); detect(m,infor->score); return 0;}
就是这段代码，打出来之后点击运行，运行出来的程序只显示黑屏，我用的VC++6. 0
大佬们帮帮忙吧！
