From 320ec0bf9b6ad8e7506a43107390d2d8e29cb2fa Mon Sep 17 00:00:00 2001
From: p8rpsfin2 <2894799701@qq.com>
Date: Sun, 12 Nov 2023 17:43:25 +0800
Subject: [PATCH] ADD file via upload

---
 information.c | 264 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 264 insertions(+)
 create mode 100644 information.c

diff --git a/information.c b/information.c
new file mode 100644
index 0000000..53df9a9
--- /dev/null
+++ b/information.c
@@ -0,0 +1,264 @@
+#include <stdio.h>
+#include <string.h>
+
+struct Student//定义学生结构体
+{
+    char id[20];
+    char name[20];
+    int class;
+    double score1;
+    double score2;
+    double score3;
+    double score;
+}student[10];
+int numstudents=0;
+void PrintMenu()//打印菜单以供选择
+{
+    printf("                              1.input\n");
+    printf("                              2.delete\n");
+    printf("                              3.select\n");
+    printf("                              4.order\n");
+    printf("                              5.output\n");
+    printf("                              6.update\n");
+    printf("                              7.quit\n");
+}
+void Input()//输入学生信息
+{
+    char a;
+    do
+    {
+        printf("Please input information:\n");
+        scanf("%s",&student[numstudents].id);
+        scanf("%s",&student[numstudents].name);
+        scanf("%d",&student[numstudents].class);
+        scanf("%lf",&student[numstudents].score1);
+        scanf("%lf",&student[numstudents].score2);
+        scanf("%lf",&student[numstudents].score3);
+        student[numstudents].score=student[numstudents].score1+student[numstudents].score2+student[numstudents].score3;
+        numstudents++;
+        printf("continue?(y or n)");//选择是否要继续输入学生信息
+        fflush(stdin);
+        scanf("%c",&a);    
+    }while(a=='y');
+}
+void Printinformation()//打印学生信息
+{
+    for(int i=0;i<numstudents;i++)
+    {
+        printf("学号:%s,姓名:%s,班级:%d,成绩1:%lf,成绩2:%lf,成绩3:%lf,总成绩:%lf\n",student[i].id,student[i].name,student[i].class,student[i].score1,student[i].score2,student[i].score3,student[i].score);
+    }
+}
+void Delete()//删除学生信息
+{
+    char a;
+    do
+    {
+        int choice;
+        printf("delete by?\n1.id\n2.name\n");//询问用什么方式选中要删除的学生
+        scanf("%d",&choice);
+        if(choice==1)
+        {
+            char cid[20]={0};
+            printf("请输入学号:\n");
+            scanf("%s",&cid);
+            int i;
+            for( i=0;i<numstudents;i++)
+            {
+                if(strcmp(student[i].id,cid)==0)
+                {
+                    for(int j=i;j<numstudents;j++)
+                    {
+                        student[j]=student[j+1];
+                    }
+                    numstudents--;
+                    printf("已删除！\n");
+                    break;
+                }
+                if(i==numstudents-1)
+                {
+                    printf("未找到该学生信息！\n");
+                }
+            }
+            
+    
+        }
+        else if(choice==2)
+        {
+            char cname[20]={0};
+            printf("请输入姓名:\n");
+            scanf("%s",&cname);
+            int i;
+            for( i=0;i<numstudents;i++)
+            {
+                if(strcmp(student[i].name,cname)==0)
+                {
+                    for(int j=i;j<numstudents;j++)
+                    {
+                        student[j]=student[j+1];
+                    }
+                    numstudents--;
+                    printf("已删除！\n");
+                    break;
+                }
+                if(i==numstudents-1)
+                {
+                    printf("未找到该学生信息！\n");
+                }    
+            }
+            
+        }
+        Printinformation();
+        printf("continue?(y or n)\n");
+        fflush(stdin);
+        scanf("%c",&a);//询问是否继续
+    }while(a=='y');
+}
+void Select()//查询学生信息
+{
+   char a;
+   do
+   {
+    printf("search by?\n1.id\n2.name\n3.class\n");//询问以什么方式检索学生信息
+    int choice;
+    scanf("%d",&choice);
+    if(choice==1)
+    {
+        char sid[20]={0};
+        printf("请输入查询学生学号:\n");
+        scanf("%s",&sid);
+        for(int i=0;i<numstudents;i++)
+        {
+            if(strcmp(student[i].id,sid)==0)
+            {
+                printf("学号:%s,姓名:%s,班级:%d,成绩1:%lf,成绩2:%lf,成绩3:%lf,总成绩:%lf\n",student[i].id,student[i].name,student[i].class,student[i].score1,student[i].score2,student[i].score3,student[i].score);
+            }
+        }
+
+    }
+    else if(choice==2)
+    {
+        char sname[20]={0};
+        printf("请输入查询学生姓名:\n");
+        scanf("%s",&sname);
+        for(int i=0;i<numstudents;i++)
+        {
+            if(strcmp(student[i].name,sname)==0)
+            {
+                printf("学号:%s,姓名:%s,班级:%d,成绩1:%lf,成绩2:%lf,成绩3:%lf,总成绩:%lf\n",student[i].id,student[i].name,student[i].class,student[i].score1,student[i].score2,student[i].score3,student[i].score);
+            }
+        }
+    }
+    else if(choice==3)
+    {
+        int sclass;
+        printf("请输入查询学生班级:\n");
+        scanf("%d",&sclass);
+        for(int i=0;i<numstudents;i++)
+        {
+            if(sclass==student[i].class)
+            {
+                printf("学号:%s,姓名:%s,班级:%d,成绩1:%lf,成绩2:%lf,成绩3:%lf,总成绩:%lf\n",student[i].id,student[i].name,student[i].class,student[i].score1,student[i].score2,student[i].score3,student[i].score);
+            }
+        }
+    }
+    printf("continue?(y or n)\n");
+    fflush(stdin);
+    scanf("%c",&a);
+
+   } while(a=='y');
+}
+void Order()//将学生信息按照班级以及成绩排序
+{
+    struct Student temp;
+    for(int i=0;i<numstudents-1;i++)//将学生按照班级排序
+    {
+        for(int j=0;j<numstudents-1-i;j++)
+        {
+            if(student[j].class>student[j+1].class)
+            {
+                temp=student[j];
+                student[j]=student[j+1];
+                student[j+1]=temp;
+            }
+        }
+    } 
+    int start=0;//将按照班级排好序的学生按照成绩在班级内部排序
+    for(int i=0;i<numstudents-1;i++) 
+    {
+        if(student[i].class != student[i+1].class)
+        {
+            int end=i;
+            for (int k=start;k<end;k++)
+            {
+                for(int l=start;l<end-k;l++)
+                {
+                    if(student[l].score<student[l+1].score)
+                    {
+                        temp=student[l];
+                        student[l]=student[l+1];
+                        student[l+1]=temp;
+                    }
+                }
+            }
+            start=i+1;
+        }
+    } 
+    Printinformation();
+}
+void Update()//修改学生信息
+{
+    char a;
+    do
+    {
+        printf("请输入修改学生学号:\n");
+        char choice[20]={0};
+        scanf("%s",&choice);
+        for(int i=0;i<numstudents;i++)
+        {
+            if(strcmp(student[i].id,choice)==0)
+            {
+                printf("请输入修改后的学号,姓名,班级,成绩1,成绩2,成绩3\n");
+                scanf("%s",&student[i].id);
+                scanf("%s",&student[i].name);
+                scanf("%d",&student[i].class);
+                scanf("%lf",&student[i].score1);
+                scanf("%lf",&student[i].score2);
+                scanf("%lf",&student[i].score3);
+                student[i].score=student[i].score1+student[i].score2+student[i].score3;
+            }
+        }
+        Printinformation();
+        printf("continue(y or n)?\n");
+        fflush(stdin);
+        scanf("%c",&a);
+    } while (a=='y');
+    
+}
+void Run()
+{
+    int choice;
+    do
+    {
+        PrintMenu();
+        printf("please input your option\n");
+        scanf("%d",&choice);
+        switch(choice)
+        {
+            case 1:Input();break;
+            case 2:Delete();break;
+            case 3:Select();break;
+            case 4:Order();break;
+            case 5:Printinformation();break;
+            case 6:Update();break;
+            case 7:printf("thanks for using!");break;
+            default:printf("Wrong Input!\n");
+        }
+    }while(choice!=7);
+
+}
+int main()
+{
+    PrintMenu();
+    Run();
+    return 0;
+}
\ No newline at end of file