From 191d9727e5415c7be28cb497aea39d71cc70fad2 Mon Sep 17 00:00:00 2001
From: phykf7bq3 <2740400883@qq.com>
Date: Thu, 21 Dec 2023 16:56:22 +0800
Subject: [PATCH] ADD file via upload

---
 124.txt | 445 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 445 insertions(+)
 create mode 100644 124.txt

diff --git a/124.txt b/124.txt
new file mode 100644
index 0000000..c8db437
--- /dev/null
+++ b/124.txt
@@ -0,0 +1,445 @@
+#include<stdio.h>
+#include<stdlib.h>
+#include<stdlib.h>
+#include<string.h>
+struct Student{   //每个学生对应一个结构体
+	char ID[20];//学号
+	char Name[10];//姓名
+	float Mark1;//语文成绩
+	float Mark2;//数学成绩
+	float Mark3;//英语成绩
+	float Mark4;//计算机成绩
+	float All; //总分
+	float Average;//平均成绩
+}students[1000];
+int num=0; //计数器
+void Copy(struct Student *arr,int i,int j)
+{
+	strcpy(arr[i].ID,arr[j].ID);
+	strcpy(arr[i].Name,arr[j].Name);
+	arr[i].Mark1 = arr[j].Mark1;
+	arr[i].Mark2 = arr[j].Mark2;
+	arr[i].Mark3 = arr[j].Mark3;
+	arr[i].Mark4 = arr[j].Mark4;
+	arr[i].All = arr[j].All;
+	arr[i].Average = arr[j].Average;
+}
+int Student_SearchByName(char name[])//通过姓名来检索学生
+{
+     int i;
+     for (i=0;i<num;i++)
+     {
+         if (strcmp(students[i].Name,name)==0)  //通过strcmp函数来对比学生姓名，找到返回在数组的位置
+         {
+              return i;
+       }
+     }
+     return -1;    //未找到返回 -1
+}
+int Student_SearchByIndex(char id[])//通过学号来检索学生信息
+{
+     int i;
+     for (i=0;i<num;i++)
+     {
+         if (strcmp(students[i].ID,id)==0)  //通过strcmp函数来对比学生id，找到返回位置
+         {
+              return i;
+         }
+     }
+     return -1;   //未找到返回 -1
+}
+void Student_DisplaySingle(int index)//输出表头
+{
+     printf("%10s%10s%8s%8s%8s%10s\n","学号","姓名","语文","数学","英语","计算机","总成绩","平均成绩");
+     printf("-------------------------------------------------------------\n");
+     printf("%10s%10s%8.2f%8.2f%8.2f%8.2f%10.2f%10.2f\n",students[index].ID,students[index].Name,
+              students[index].Mark1,students[index].Mark2,students[index].Mark3,students[index].Mark4,students[index].All,students[index].Average);
+}
+void inputt()//利用循环录入学生信息
+{
+     while(1)
+     {
+         printf("请输入学号:");
+         scanf("%s",&students[num].ID);
+         getchar();
+         printf("请输入姓名:");
+         scanf("%s",&students[num].Name);
+         getchar();
+         printf("请输入成绩:");
+         scanf("%f",&students[num].Mark1);
+         getchar();
+         printf("请输入成绩:");
+         scanf("%f",&students[num].Mark2);
+         getchar();
+         printf("请输入成绩:");
+         scanf("%f",&students[num].Mark3);
+         getchar();
+         printf("请输入成绩:");
+         scanf("%f",&students[num].Mark4);   //依次输入各项数据
+         getchar();
+         students[num].All=students[num].Mark1+students[num].Mark2+students[num].Mark3+students[num].Mark4;    //输完数据后自动计算总成绩与平均成绩
+         students[num].Average=(students[num].Mark1+students[num].Mark2+students[num].Mark3+students[num].Mark4)/4;
+         if(Student_SearchByIndex(students[num].ID) == -1)
+         {
+         	num++;  //移向下一个位置
+		 }
+		 else
+		 {
+		 	printf("学号重复，输入数据无效 !!!\n");
+		 }
+
+ 		 printf("是否继续?(y/n)");
+         if (getchar()=='n')
+         {
+              break;
+         }
+     }
+}
+void modify()//修改成绩
+{
+	  while(1)
+     {
+         char id[20];
+         int index;
+         printf("请输入要修改的学生的学号:");
+         scanf("%s",&id);
+         getchar();
+         index=Student_SearchByIndex(id);  //调用搜查id函数，根据其返回值确定位置
+         if (index==-1)
+         {
+              printf("学生不存在!\n");
+         }
+         else
+         {
+              printf("你要修改的学生信息为:\n");
+              Student_DisplaySingle(index);
+              printf("-- 请输入新值--\n");
+              printf("请输入学号:");
+              scanf("%s",&students[index].ID);
+              getchar();
+              printf("请输入姓名:");
+              scanf("%s",&students[index].Name);
+              getchar();
+              printf("请输入语文成绩:");
+              scanf("%f",&students[index].Mark1);
+ 			  getchar();
+              printf("请输入数学成绩:");
+              scanf("%f",&students[index].Mark2);
+              getchar();
+              printf("请输入英语成绩:");
+              scanf("%f",&students[index].Mark3);
+              getchar();
+              printf("请输入计算机成绩:");
+              scanf("%f",&students[index].Mark4);  //重新录入一套新的数据替代
+              getchar();
+              students[index].All=students[index].Mark1+students[index].Mark2+students[index].Mark3+students[index].Mark4;
+        	  students[index].Average=(students[index].Mark1+students[index].Mark2+students[index].Mark3+students[index].Mark4)/4;
+         }
+         printf("是否继续?(y/n)");
+         if (getchar()=='n')
+         {
+              break;
+         }
+     }
+}
+void deletee()//删除学生信息
+{
+	  int i;
+     while(1)
+     {
+         char id[20];
+         int index;
+         printf("请输入要删除的学生的学号:");
+         scanf("%s",&id);
+         getchar();
+         index=Student_SearchByIndex(id);   //调用搜查id函数，根据其返回值确定位置
+         if (index==-1)
+         {
+              printf("学生不存在!\n");
+         }
+         else
+         {
+              printf("你要删除的学生信息为:\n");
+              Student_DisplaySingle(index);
+              printf("是否真的要删除?(y/n)");
+              if (getchar()=='y')
+              {
+                   for (i=index;i<num-1;i++)
+                   {
+                   	   Copy(students,i,i+1);
+                       //students[i]=students[i+1];    //把后边的对象都向前移动
+                   }
+                   num--;
+              }
+             getchar();
+         }
+         printf("是否继续?(y/n)");
+         if (getchar()=='n')
+         {
+              break;
+         }
+     }
+}
+void display()//打印已录入的学生信息
+{
+	 int a;
+     printf("%10s%10s%8s%8s%8s%8s%10s%10s\n","学号","姓名","语文","数学","英语","计算机","总成绩","平均成绩");
+     printf("-------------------------------------------------------------\n");
+     for (a=0;a<num;a++)
+     {
+         printf("%10s%10s%8.2f%8.2f%8.2f%8.2f%10.2f%10.2f\n",students[a].ID,students[a].Name,
+              students[a].Mark1,students[a].Mark2,students[a].Mark3,students[a].Mark4,students[a].All,students[a].Average);
+     }
+}
+void insert()//指定位置插入学生信息
+{
+		int a,b,c;
+		printf("请输入你要插入的位置");
+		scanf("%d",&a);
+		if(a>num) {
+		printf("输入的位置有误，请重新输入,当前共%d条数据\n",num);
+		scanf("%d",&a);}
+
+     	b=num-1;
+     	for(;b>=a-1;b--)
+     	{
+     		//strcpy(students[b+1].ID,students[b].ID);
+     		//strcpy(students[b+1].Name,students[b].Name);
+     		//students[b+1].Mark1=students[b].Mark1;
+     		//students[b+1].Mark2=students[b].Mark2;
+     		//students[b+1].Mark3=students[b].Mark3;
+     		//students[b+1].Mark4=students[b].Mark4;
+     		//students[b+1].All=students[b].All;
+     		//students[b+1].Average=students[b].Average;
+			Copy(students,b+1,b); //根据其输入的位置，将其及以后的数据向后移动一个位置
+
+		 }
+		 num++;
+         printf("请输入学号:");
+         scanf("%s",&students[a-1].ID);
+         getchar();
+         printf("请输入姓名:");
+         scanf("%s",&students[a-1].Name);
+         getchar();
+         printf("请输入语文成绩:");
+         scanf("%f",&students[a-1].Mark1);
+         getchar();
+         printf("请输入数学成绩:");
+         scanf("%f",&students[a-1].Mark2);
+         getchar();
+         printf("请输入英语成绩:");
+         scanf("%f",&students[a-1].Mark3);
+         getchar();
+         printf("请输入计算机成绩:");
+         scanf("%f",&students[a-1].Mark4);  //输入新数据
+         getchar();
+         students[a-1].All=students[a-1].Mark1+students[a-1].Mark2+students[a-1].Mark3+students[a-1].Mark4;
+         students[a-1].Average=(students[a-1].Mark1+students[a-1].Mark2+students[a-1].Mark3+students[a-1].Mark4)/4;
+
+}
+void search()//查询学生信息
+{
+	 while(1)
+     {
+         char name[20];
+         int index;
+         printf("请输入要查询的学生的姓名:");
+         scanf("%s",&name);
+         getchar();
+         index=Student_SearchByName(name);   //调用搜查name函数，根据其返回值确定位置
+         if (index==-1)
+         {
+              printf("学生不存在!\n");
+         }
+         else
+         {
+              printf("你要查询的学生信息为:\n");
+              Student_DisplaySingle(index);
+         }
+         printf("是否继续?(y/n)");
+         if (getchar()=='n')
+         {
+              break;
+         }
+     }
+}
+void sort()//根据平均分排序
+{
+	 int i,j;
+	 //struct students tmp;
+     for (i=0;i<num;i++)
+     {
+     	students[i].Average=(students[i].Mark1+students[i].Mark2+students[i].Mark3+students[i].Mark4)/4;
+     }
+     for (i=0;i<num;i++)
+     {
+         for (j=1;j<num-i;j++)
+         {
+              if (students[j-1].Average<students[j].Average)
+              {
+
+				   Copy(students,num,j-1);
+				   Copy(students,j-1,j);
+				   Copy(students,j,num);
+				   //tmp=students[j-1];
+                   //students[j-1]=students[j];
+                   //students[j]=tmp;      //冒泡排序
+            }
+         }
+     }
+     int a;
+     printf("%10s%10s%8s%8s%8s%10s\n","学号","姓名","语文","数学","英语","计算机","总成绩","平均成绩");
+     printf("-------------------------------------------------------------\n");
+     for (a=0;a<num;a++)
+     {
+         printf("%10s%10s%8.2f%8.2f%8.2f%8.2f%10.2f%10.2f\n",students[a].ID,students[a].Name,
+              students[a].Mark1,students[a].Mark2,students[a].Mark3,students[a].Mark4,students[a].All,students[a].Average);
+     }
+}
+
+
+void SearchLow()//搜索不及格的并输出
+{
+	int a;
+	printf("           语文不及格的有%10s%10s%8s\n","学号","姓名","语文");
+	for(a=0;a<num;a++)
+	{
+		if(students[a].Mark1<60)
+		printf("%10s%10s%8.2f\n",students[a].Name,students[a].ID,students[a].Mark1);    //从头搜索到尾，若小于60就输出
+	 }
+
+	printf("           数学不及格的有%10s%10s%8s\n","学号","姓名","数学");
+	for(a=0;a<num;a++)
+	{
+		if(students[a].Mark2<60)
+		printf("%10s%10s%8.2f\n",students[a].Name,students[a].ID,students[a].Mark2);
+	 }
+
+	 printf("           英语不及格的有%10s%10s%8s\n","学号","姓名","英语");
+	for(a=0;a<num;a++)
+	{
+		if(students[a].Mark3<60)
+		printf("%10s%10s%8.2f\n",students[a].Name,students[a].ID,students[a].Mark3);
+	 }
+
+	 printf("           计算机不及格的有%10s%10s%8s\n","学号","姓名","计算机");
+	for(a=0;a<num;a++)
+	{
+		if(students[a].Mark4<60)
+		printf("%10s%10s%8.2f\n",students[a].Name,students[a].ID,students[a].Mark4);
+	 }
+	 system("pause");
+}
+
+void SearchHigh()//搜索成绩最高者输出
+{
+	int a;
+	int max ;
+	printf("           语文最高分为%10s%10s%8s\n","学号","姓名","语文");
+	max=students[0].Mark1;
+	for(a=1;a<num;a++)
+	{
+		if(students[a].Mark1>max)
+		max=students[a].Mark1;
+	}
+	for(a=0;a<num;a++)
+	{
+		if(max==students[a].Mark1)
+		printf("%10s%10s%8.2f\n",students[a].Name,students[a].ID,students[a].Mark1);
+	}
+
+	printf("           数学最高分为%10s%10s%8s\n","学号","姓名","数学");
+	max=students[0].Mark2;
+	for(a=1;a<num;a++)
+	{
+		if(students[a].Mark2>max)
+		max=students[a].Mark2;
+	}
+	for(a=0;a<num;a++)
+	{
+		if(max==students[a].Mark2)
+		printf("%10s%10s%8.2f\n",students[a].Name,students[a].ID,students[a].Mark2);
+	}
+
+	printf("           英语最高分为%10s%10s%8s\n","学号","姓名","英语");
+	max=students[0].Mark3;
+	for(a=1;a<num;a++)
+	{
+		if(students[a].Mark3>max)
+		max=students[a].Mark3;
+	}
+	for(a=0;a<num;a++)
+	{
+		if(max==students[a].Mark3)
+		printf("           %10s%10s%8.2f\n",students[a].Name,students[a].ID,students[a].Mark3);
+	}
+
+	printf("           计算机最高分为%10s%10s%8s\n","学号","姓名","计算机");
+	max=students[0].Mark4;
+	for(a=1;a<num;a++)
+	{
+		if(students[a].Mark4>max)
+		max=students[a].Mark4;
+	}
+	for(a=0;a<num;a++)
+	{
+		if(max==students[a].Mark4)
+		printf("           %10s%10s%8.2f\n",students[a].Name,students[a].ID,students[a].Mark4);
+	}
+	 system("pause");
+}
+void Save()
+{
+	FILE*fp = fopen("temp.txt","w+");
+	fprintf(fp,"%d\n",num);
+	for(int i = 0 ; i< num ;i++)
+	{
+		fprintf(fp,"%s %s %f %f %f %f %f %f\n",students[i].ID,students[i].Name,students[i].Mark1,students[i].Mark2,students[i].Mark3,students[i].Mark4,students[i].All,students[i].Average);
+	}
+	fclose(fp);
+}
+void Load()
+{
+	FILE*fp = fopen("temp.txt","r");
+	fscanf(fp,"%d",&num);
+	for(int i = 0 ; i< num ;i++)
+	{
+		fscanf(fp,"%s %s %f %f %f %f %f %f\n",students[i].ID,students[i].Name,&students[i].Mark1,&students[i].Mark2,&students[i].Mark3,&students[i].Mark4,&students[i].All,&students[i].Average);
+	}
+	fclose(fp);
+}
+/*主程序*/
+int main(){
+	int i;
+	while(1){
+		 Load();
+		 printf("\t\t\t\t\t-------- 学生成绩管理系统-------\n\n\n\n");     //菜单
+         printf("\t\t\t\t\t1. 增加学生记录\n\n");
+         printf("\t\t\t\t\t2. 修改学生记录\n\n");
+         printf("\t\t\t\t\t3. 删除学生记录\n\n");
+         printf("\t\t\t\t\t4. 插入学生记录\n\n");
+         printf("\t\t\t\t\t5. 显示所有记录\n\n");
+         printf("\t\t\t\t\t6. 查询学生记录\n\n");
+         printf("\t\t\t\t\t7. 按平均成绩排序\n\n");
+         printf("\t\t\t\t\t8. 输出各科目不及格学生\n\n");
+         printf("\t\t\t\t\t9. 输出各科目最高分\n\n");
+         printf("\t\t\t\t\t0. 退出\n\n\n");
+         printf("请选择(0-9):");
+ 		 scanf("%d",&i);
+			switch(i){
+		 case 1:inputt();break;
+		 case 2:modify();break;
+	 	 case 3:deletee();break;
+	 	 case 4:insert();break;
+	 	 case 5:display();break;
+		 case 6:search();break;
+		 case 7:sort();break;
+		 case 8:SearchLow();break;
+		 case 9:SearchHigh();break;
+		 case 0:exit(0);
+		 default:  ;
+	}
+	Save();
+}
+	 return 0;
+}