#include
#include
#include
struct student { long number; char name[8]; float score; struct student *next; }*head=NULL; int sum=0; //计数 void main() { void show(); void insert(); void del(); char command[6]; printf("***********************************************************\n"); printf(" 链表综合练习程序\n\n"); printf("***********************************************************\n"); while(1) { printf("请输入操作命令,(输入help查看帮助):\n"); scanf("%s",command); if(strcmp(command,"exit")==0) break; //输入exit结束循环 else if(strcmp(command,"insert")==0) insert(); else if(strcmp(command,"show")==0) show(); else if(strcmp(command,"insert")==0) insert(); else if(strcmp(command,"del")==0) del(); else if(strcmp(command,"help")==0) { printf("命令名\t\t\t命令说明\n\n"); printf("help \t\t\t查看帮助\n"); printf("show \t\t\t显示内容\n"); printf("insert\t\t\t插入内容\n"); printf("del \t\t\t删除信息\n"); printf("exit \t\t\t退出程序\n\n"); } else printf("命令无效,请重新输入.(输入help查看帮助)\n"); } printf("Bye\n"); } void show() { if(head==NULL)printf("没有任何记录\n\n"); else { struct student *i; printf("学号\t姓名\t分数\n"); for(i=head;i!=NULL;i=i->next) printf("%ld\t%s\t%.2f\n",i->number,i->name,i->score); printf("共有%d条学生记录\n\n",sum); } } void insert() { printf("请按以下格式依次软每项,各项用空格分开\n"); printf("学号\t姓名\t分数\n"); struct student *i,*p,*j; p=(struct student *)malloc(sizeof(struct student)); scanf("%ld%s%f",&p->number,p->name,&p->score); if(head==NULL){head=p;head->next=NULL;} //链表为空时 else { for(i=head;i->next!=NULL && p->number>i->number;j=i,i=i->next); if(p->number<=i->number) { if(i==head)head=p; //插到最前面 else j->next=p; //插到中间 p->next=i; } else { p->next=NULL; i->next=p; } } sum++; printf("操作成功\n\n"); } void del() { if(head==NULL)printf("错误:尚未输入任何记录\n"); //链表为空时 else { long number; struct student *i,*j; printf("请输入要删除的学生的学号:"); scanf("%ld",&number); for(i=head;i->next!=NULL && i->number!=number;j=i,i=i->next); if(i->number==number) { if(i==head)head=i->next; else j->next=i->next; sum--; free(i); printf("删除成功\n\n"); } else printf("未找到输入的学号,请核对后输入\n"); } }

这程序写的很不错的，看到了就保存在这里了~