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#include<stdio.h>
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#include<string.h>
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#include<malloc.h>
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#include<windows.h>
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#define BUFSIZE 20
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struct node //结构体
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{
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int num; //学号
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char name[15]; // 姓名
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int gs; //高数成绩
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int yy; //英语成绩
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int c; //c语言成绩
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node *next;//指针
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};
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node *create()//创建学生信息
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{
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struct node * head,* p,* q; //*p指向头，而*q指向尾。
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int number;
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char sname[15];
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int sgs,syy,sc;
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head=(node *)malloc(sizeof(node)); //动态分配内存
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if(head==NULL)
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{printf("内存分配失败！创建失败！");
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}
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else
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{
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printf("请输入学号,姓名,高数，英语，C语言\n");
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scanf("%d",&number);//输入学号
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scanf("%s",&sname);//输入姓名
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scanf("%d",&sgs);//输入高数成绩
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scanf("%d",&syy);//输入英语成绩
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scanf("%d",&sc);//输入c语言成绩
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head->num=number;//赋值
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head->gs=sgs;//赋值
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head->yy=syy;//赋值
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head->c=sc;//赋值
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strcpy(head->name,sname);//赋值
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head->next=NULL;//指针域为空
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p=head;
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while(1)
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{
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q=(node *)malloc(sizeof(node));//动态分配内存
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printf("请输入学号,姓名,高数，英语，C语言(输入0时结束)\n");
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scanf("%d",&number);//输入学号
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if(number==0)
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{
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break;//输入0跳出信息输入
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}
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scanf("%s",&sname);//输入姓名
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scanf("%d",&sgs);//输入高数成绩
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scanf("%d",&syy);//输入英语成绩
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scanf("%d",&sc);//输入c语言成绩
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q->num=number;//赋值
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q->gs=sgs;//赋值
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q->yy=syy;//赋值
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q->c=sc;//赋值
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strcpy(q->name,sname);//赋值
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q->next=NULL;//q指向下个结构体的尾部，指针域为空
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p->next=q; //
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p=q;
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}
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return head;//返回头结点
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}
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}
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node *jiaru(node *head)//添加学生信息
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{
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node *p,* q;
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int number;
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char sname[15];
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int sgs,syy,sc;
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p=head;
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while(p->next!=NULL)
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{
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p=p->next;
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}
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while(1)
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{
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q=(node *)malloc(sizeof(node));//动态分配内存
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printf("请输入学号,姓名,高数，英语，C语言(输入0时结束)\n");
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scanf("%d",&number);//输入学号
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if(number==0)
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{
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break;//输入0跳出信息输入
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}
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scanf("%s",&sname);//输入姓名
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scanf("%d",&sgs);//输入高数成绩
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scanf("%d",&syy);//输入英语成绩
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scanf("%d",&sc);//输入c语言成绩
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q->num=number;//赋值
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q->gs=sgs;//赋值
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q->yy=syy;//赋值
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q->c=sc;//赋值
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strcpy(q->name,sname);//赋值
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q->next=NULL;//指针域为空
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p->next=q;
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p=q;
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}
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return head;//返回头结点
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}
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node * delete_name(node *head)//按姓名删除学生信息
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{
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node *b,*p;
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p=head;
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char qname[15];
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char c;
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printf("请输入要删除学生姓名:");
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scanf("%s",&qname);//输入要删除学生姓名
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while(1)
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{
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if(p==NULL)
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{
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return head;//若信息为空则返回原头结点
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}
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if(strcmp(p->name,qname)==0)
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{
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printf("确认删除y/n:");
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scanf("%s",&c);
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if(c=='y')
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{
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if(p==head)//判断头指针
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{
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head=p->next;
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free(p);//释放内存空间
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printf("删除成功！\n");
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return head;//返回头结点
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}
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else
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{
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b->next=p->next;//使p结点后面的链表和前面的链表连接
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free(p);//释放内存空间
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printf("删除成功！\n");
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return head;//返回头结点
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}
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}
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else
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printf("退出删除！\n");
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}
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b=p;
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p=p->next;//向下一个结点
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}
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printf("删除出错！\n");
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return head;//返回头结点
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}
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node * delete_i(node *head)//按学号删除学生信息
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{
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node *b,*p;
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p=head;
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int i;
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char c;
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printf("请输入要删除学生学号:");
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scanf("%d",&i);//输入要删除学生学号
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while(1)
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{
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if(p==NULL)
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{
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return head;//若信息为空则返回原头结点
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}
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if(p->num==i)
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{
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printf("确认删除y/n:");
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scanf("%s",&c);
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if(c=='y')
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{
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if(p==head)
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{
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head=p->next;
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free(p);//释放内存空间
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printf("删除成功！\n");
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return head;//返回头结点
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}
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else
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{
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b->next=p->next;//使p结点后面的链表和前面的链表连接
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free(p);//释放内存空间
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printf("删除成功！\n");
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return head;//返回头结点
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}
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}
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else
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printf("退出删除！\n");
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}
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b=p;
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p=p->next;//向下一个结点
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}
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printf("删除出错！\n");
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return head;//返回头结点
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}
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int query_name(node * head)//按姓名查找学生信息
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{
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struct node * p;
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char sname[20];
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p=head;
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printf("请输入你要查找的姓名:");
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scanf("%s",&sname);//输入要查找学生姓名
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while(p!=NULL)//循环条件p结点不为NULL
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{
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if(strcmp(p->name,sname)==0)
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{
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printf("---------------------------------------------\n");
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printf(" %d | %s | %d | %d | %d\n",p->num,p->name,p->gs,p->yy,p->c);
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printf("---------------------------------------------\n");
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return 1;
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}
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p=p->next;//向下一个结点
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}
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printf("没有找到！！！\n");
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return 0;
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}
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int query_i(node * head)//按学号查找学生信息
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{
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struct node * p;
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int i;
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p=head;
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printf("请输入你要查找的学号:");
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scanf("%d",&i);//输入要查找学生姓学号
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while(p!=NULL)//循环条件p结点不为NULL
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{
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if(p->num==i)
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{
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printf(" 学号 姓名 高数 英语 c语言\n");
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printf("---------------------------------------------\n");
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printf(" %d | %s | %d | %d | %d\n",p->num,p->name,p->gs,p->yy,p->c);
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printf("---------------------------------------------\n");
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return 1;
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}
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p=p->next;//向下一个结点
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}
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printf("没有找到！！！\n");
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return 0;
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}
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int install_name(node * head)//插入学生信息到某姓名学生之后
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{
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struct node *p,*n;
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p=head;
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n=(node *)malloc(sizeof(node));//动态分配存储空间
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int number;
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char sname[15],qname[15];
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int sgs,syy,sc;
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printf("请输入学号，姓名,高数，英语，C语言\n");
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scanf("%d",&number);//输入学号
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scanf("%s",&sname);//输入姓名
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scanf("%d",&sgs);//输入高数成绩
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scanf("%d",&syy);//输入英语成绩
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scanf("%d",&sc);//输入c语言成绩
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n->num=number;//赋值
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n->gs=sgs;//赋值
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n->yy=syy;//赋值
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n->c=sc;//赋值
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strcpy(n->name,sname);//赋值
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n->next=NULL;//指针域为空
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printf("请输入要插入到那位学生姓名后面:");
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scanf("%s",&qname);
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while(p!=NULL)//循环条件p结点不为NULL
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{
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if(strcmp(p->name,qname)==0)
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{
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n->next=p->next;//连接新结点
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p->next=n;//连接新结点
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return 1;
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}
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p=p->next;//向下一个结点
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}
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printf("没有找到该学生！！\n");
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return 0;
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}
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int install_i(node * head)//插入学生信息到第几位学生之后
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{
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struct node *p,*n;
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p=head;
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n=(node *)malloc(sizeof(node));// 动态分配存储空间
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int number,inno,j=1;
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char sname[15]; ;
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int sgs,syy,sc;
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printf("请输入学号，姓名,高数，英语，C语言\n");
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scanf("%d",&number);//输入学号
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scanf("%s",&sname);//输入姓名
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scanf("%d",&sgs);//输入高数成绩
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scanf("%d",&syy);//输入英语成绩
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scanf("%d",&sc);//输入c语言成绩
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n->num=number;//赋值
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n->gs=sgs;//赋值
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n->yy=syy;//赋值
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n->c=sc;//赋值
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strcpy(n->name,sname);//赋值
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n->next=NULL;//指针域为空
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printf("请输入要插入到第几位学生姓名后面：");
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scanf("%d",&inno);
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while(p!=NULL&&j<inno)//
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{
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p=p->next;
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j++;
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}
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if(j==inno)
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{
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n->next=p->next;
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p->next=n;
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return 1;
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}
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printf("没有找到该学生！！\n");
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return 0;
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}
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int xiugai_name(node *head)//通过姓名修改学生信息
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{
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node *p;
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p=head;
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char sname[15];
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int sgs,syy,sc,number;
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if(p==NULL)//判断是否为空
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{
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printf("无学生信息\n");
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}
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else
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{
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printf("请输入你需要修改的学生姓名:\n");
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scanf("%s",&sname);
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while(p!=NULL)
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{
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if(strcmp(p->name,sname)==0)//找到该同学
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{
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printf("请修改该生学号:\n");
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scanf("%d",&number);
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p->num=number;
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printf("请修改该生姓名:\n");
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scanf("%s",&sname);
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strcpy(p->name,sname);
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printf("请修改该生三科成绩:\n");
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scanf("%d%d%d",&sgs,&syy,&sc);
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p->gs=sgs;
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p->yy=syy;
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p->c=sc;
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return 1;
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}
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p=p->next;
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}
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printf("无该学生信息！！！\n");
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}
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}
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int xiugai_i(node *head)//通过学号修改学生信息
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{
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node *p;
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p=head;
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char sname[15];
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int sgs,syy,sc,number;
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if(p==NULL)//判断是否为空
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{
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printf("无学生信息\n");
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}
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else
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{
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printf("请输入你需要修改的学生学号:\n");
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scanf("%d",&number);
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while(p!=NULL)
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{
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if(p->num==number)//找到该同学
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{
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printf("请修改该生学号:\n");
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scanf("%d",&number);
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p->num=number;
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printf("请修改该生姓名:\n");
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scanf("%s",&sname);
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strcpy(p->name,sname);
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printf("请修改该生三科成绩:\n");
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scanf("%d%d%d",&sgs,&syy,&sc);
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p->gs=sgs;
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p->yy=syy;
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p->c=sc;
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return 1;
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}
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p=p->next;
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}
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printf("无该学生信息！！！\n");
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}
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}
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void printf(node * head)//输出所有信息
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{
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FILE *fp;
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char buf[BUFSIZE];
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//打开文件
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fp=fopen("D:\\1.txt","r");
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//判断是否成功
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if(NULL==fp)
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{
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printf("打开文件失败！");
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}
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//获取文件
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while(fgets(buf,BUFSIZE,fp))
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{
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printf("%s",buf);
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}
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//关闭文件
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fclose(fp);
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struct node *p;
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p=head;
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printf("\n\n新添加的学生成绩信息！");
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printf("\n 学号 姓名 高数 英语 c语言\n");
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while(p!=NULL)//循环条件p结点不为NULL
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{
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printf("---------------------------------------------\n");
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printf(" %d | %s | %d | %d | %d\n",p->num,p->name,p->gs,p->yy,p->c);
|
|
|
p=p->next;
|
|
|
}
|
|
|
printf("---------------------------------------------\n");
|
|
|
}
|
|
|
|
|
|
int main()//主函数
|
|
|
{
|
|
|
|
|
|
char name[15];
|
|
|
int n;
|
|
|
struct node * head;
|
|
|
system("color 4f");
|
|
|
printf("\n*************学生成绩管理系统****************\n");
|
|
|
printf("*********************************************\n");
|
|
|
while(1)
|
|
|
{
|
|
|
printf(" * 1.输入信息 *\n");
|
|
|
printf(" * *\n");
|
|
|
printf(" * 2.添加学生信息 *\n");
|
|
|
printf(" * *\n");
|
|
|
printf(" * 3.根据姓名查找学生信息 *\n");
|
|
|
printf(" * *\n");
|
|
|
printf(" * 4.根据学号查找学生信息 *\n");
|
|
|
printf(" * *\n");
|
|
|
printf(" * 5.根据姓名删除学生信息 *\n");
|
|
|
printf(" * *\n");
|
|
|
printf(" * 6.根据学号删除学生信息 *\n");
|
|
|
printf(" * *\n");
|
|
|
printf(" * 7.根据姓名修改学生信息 *\n");
|
|
|
printf(" * *\n");
|
|
|
printf(" * 8.根据学号修改学生信息 *\n");
|
|
|
printf(" * *\n");
|
|
|
printf(" * 9.插入学生信息到某姓名学生之后 *\n");
|
|
|
printf(" * *\n");
|
|
|
printf(" * 10.插入学生信息到第几位学生之后 *\n");
|
|
|
printf(" * *\n");
|
|
|
printf(" * 11.输出所有学生信息 *\n");
|
|
|
printf(" * *\n");
|
|
|
printf(" * 0.退出 *\n\n");
|
|
|
printf("请选择操作:");
|
|
|
scanf("%d",&n); //判断操作
|
|
|
if(n==1)
|
|
|
head=create();
|
|
|
if(n==2)
|
|
|
head=jiaru(head);
|
|
|
if(n==3)
|
|
|
query_name(head);
|
|
|
if(n==4)
|
|
|
query_i(head);
|
|
|
if(n==5)
|
|
|
head=delete_name(head);
|
|
|
if(n==6)
|
|
|
head=delete_i(head);
|
|
|
if(n==7)
|
|
|
xiugai_name(head);
|
|
|
if(n==8)
|
|
|
xiugai_i(head);
|
|
|
if(n==9)
|
|
|
install_name(head);
|
|
|
if(n==10)
|
|
|
install_i(head);
|
|
|
if(n==11)
|
|
|
printf(head);
|
|
|
if(n==0)
|
|
|
{
|
|
|
printf("谢谢使用！\n");
|
|
|
break;
|
|
|
}
|
|
|
}
|
|
|
}
|
