编写程序，实现学生成绩管理：要求实现以下功能： 1

C语言编程，学生成绩管理系统，要求实现以下功能，急求大佬帮忙，

#include
#include
#include
#include
#include
voidmenu(structstudent*parr,intlen);
voidsore(structstudent*parr,intlen);
voidoutput(structstudent*parr,int*len);
voidinput(structstudent*parr,intlen);
voidwrite(structstudent*parr,intlen);
voidread(structstudent*parr,intlen);
voidfind(structstudent*parr,intlen);
voidlogout(structstudent*parr,intlen);
voidexit(structstudent*parr,intlen);
voidmodify(structstudent*parr,intlen);
voidinsert(structstudent*parr,int*len);
structstudent
{
	intnumber;//学号
	floatscore;//成绩
	charname[10];//姓名
};
intmain(void)
{	
	structstudent*parr;
	intlen=0;
	charch='\0';
	printf("请输入需要存入的学生人数：");
	scanf("%d",&len);
	
	parr=(structstudent*)malloc((sizeof(structstudent)*len));
	
	menu(parr,len);
	printf("按回车键继续\n");
	while(1)
	{
		system("cls");
		printf("\n\n\n\n");
		printf("\t\t|******************************************|\n");
		printf("\t\t|---------------学生管理系统-------------|\n");
		printf("\t\t|------------1.写入学生信息---------|\n");
		printf("\t\t|------------2.查看全部学生信息---------|\n");
		printf("\t\t|------------3.按成绩排序---------|\n");
		printf("\t\t|------------4.按学号查找---------|\n");
		printf("\t\t|------------5.修改学生信息---------|\n");
		printf("\t\t|------------6.添加学生---------|\n");
		printf("\t\t|------------7.保存---------|\n");
		printf("\t\t|------------0.退出---------|\n");
		printf("\t\t|******************************************|\n");
		printf("\t\t\n");
		scanf("%c",&ch);
		switch(ch)
		{
			case'1':	input(parr,len);	break;
			case'2':	output(parr,&len);	break;
			case'3':	sore(parr,len);		break;
			case'4':	find(parr,len);		break;
			case'5':	modify(parr,len);	break;
			case'6':	insert(parr,&len);	break;
			case'7':	write(parr,len);	break;
			case'0':	exit(parr,len);	break;
			default:	printf("\n\t输入错误!按回车键返回主菜单！");
			getch();
		}
	}
	
	free(parr);
	return0;
}
//函数功能：实现按成绩排序
voidsore(structstudent*parr,intlen)
{
	inti,j;
	structstudentt;
		for(i=0;i		{
			for(j=0;j				if(parr[j+1].score>parr[j].score)
				{
					t=parr[j+1];
					parr[j+1]=parr[j];
					parr[j]=t;
				}
		}
	output(parr,&len);
	return;
}
//函数功能：打印信息
voidoutput(structstudent*parr,int*len)
{
	inti;
	for(i=0;i<*len;i++)
		printf("姓名：%s成绩：%.2f学号：%d\n",parr[i].name,parr[i].score,parr[i].number);
	printf("\n");
	getchar();
	getchar();
	return;
}
//函数功能：输入数据
voidinput(structstudent*parr,intlen)
{	inti;
	for(i=0;i	{
		printf("请输入第%d个学生信息：",i+1);
		printf("姓名：");
		scanf("%s",parr[i].name);//name是数组名本身就是地址
		printf("成绩:");
		scanf("%f",&parr[i].score);
		printf("学号：");
		scanf("%d",&parr[i].number);
	}
	printf("\n");
	return;
}
/*函数功能：将数据写入文件*/
voidwrite(structstudent*parr,intlen)
{
	inti;//控制循环
	FILE*fp=NULL;//定义文件指针
	fp=fopen("D:\\student.txt","w");//打开文件并使文件指针指向它，以写的方式
	if(fp==NULL)//如果文件没有打开，提示错误并退出
	{
		printf("\n\t文件没有打开！程序结束！");
		getchar();//等待用户观察
		exit(0);//结束整个程序
	}
	else
	{
		for(i=0;i		{
			fprintf(fp,"姓名：%s成绩：%.2f学号：%d\n",parr[i].name,parr[i].score,parr[i].number);
		}
	}
	printf("已将学生信息保存在了D盘根目录下的student.txt文件中。\n");
	getch();
	fclose(fp);
	return;
}
/*函数功能：读取文件数据*/
voidread(structstudent*parr,intlen)
{
	inti;
	FILE*fp=NULL;
	fp=fopen("D:\\student.txt","r");//以只读的方式打开文件
	if(fp==NULL)
	{
		printf("数据读取失败!\n");
		getchar();
		exit(0);
	}
	else
	{
		for(i=0;i		{
			fscanf(fp,"%s,%d,%.2f\n",parr[i].name,parr[i].number,parr[i].score);
		}
	}
	fclose(fp);
	return;
}
/*函数功能：按学号找学生信息*/
voidfind(structstudent*parr,intlen)
{
	intnumber=0;
	inti;
	
	printf("请您输入需要查找的学号：");
	scanf("%d",&number);
	
	for(i=0;i	{
		if(number==parr[i].number)
		{
			printf("姓名：%s成绩：%.2f学号：%d\n",parr[i].name,parr[i].score,parr[i].number);
		}
		
	}
	getch();
	return;
}
/*函数功能：注销学生信息*/
voidlogout(structstudent*parr,intlen)
{
	charch='\0';
	find(parr,len);
	printf("您确定要注销该学生吗？确定请按Y，返回主菜单请按N！\n");
	scanf("%d",&ch);
	if((ch=='Y')||(ch=='y'))
	{
		
	}
	return;
}
voidmenu(structstudent*parr,intlen)
{
	printf("\t\t||=========================================||\n");
	printf("\t\t||-----------------------------------------||\n");
	printf("\t\t||-----------欢迎使用学生管理系统----------||\n");
	printf("\t\t||-----------------------------------------||\n");
	printf("\t\t||=========================================||\n");
	getchar();
	getchar();
	system("cls");
	return;
}
/*函数功能：结束整个程序*/
voidexit(structstudent*parr,intlen)
{//	getchar();
	charch='\0';
	do
	{
		printf("您确定要退出！（y/n）:");
		scanf("%c",&ch);
	}while((ch!='Y')&&(ch!='y')&&(ch!='N')&&(ch!='n'));
	if((ch=='Y')||(ch=='y'))
	{
		exit(0);
	}
	
	return;
}
/*函数功能：修改学生信息*/
voidmodify(structstudent*parr,intlen)
{
	intnumber=0;
	charch='\0';
	inti;
	printf("请您输入要修改的学生的学号：");
	scanf("%d",&number);
	for(i=0;i	{
		if(number==parr[i].number)
		{
			printf("姓名：%s成绩：%.2f学号：%d\n",parr[i].name,parr[i].score,parr[i].number);
			printf("您确定要修改该学生信息（y/n）");
			scanf("%c",&ch);
			if(ch=='y')
			{
				printf("请输入姓名：");
				scanf("%s",parr[i].name);
				printf("请输入成绩：");
				scanf("%f",&parr[i].score);
				printf("请输入学号：");
				scanf("%d",&parr[i].number);
				printf("姓名：%s成绩：%.2f学号：%d\n",parr[i].name,parr[i].score,parr[i].number);
				printf("修改成功!");
				getch();
			}
			else
			{
				printf("没有找到该学生");
				getch();
				break;
			}
			
		}
		
	}
	return;
}
/*函数功能：添加学生*/
voidinsert(structstudent*parr,int*len)
{
	intnumber=0;//添加学生的个数
	inti;
	printf("请输入您要添加几个学生信息：");
	scanf("%d",&number);
	parr=(structstudent*)malloc((sizeof(structstudent)*(*len+number)));
	for(i=*len;i<*len+number;i++)
	{
		printf("请输入第%d个学生信息：",i+1);
		printf("姓名：");
		scanf("%s",parr[i].name);
		printf("成绩:");
		scanf("%f",&parr[i].score);
		printf("学号：");
		scanf("%d",&parr[i].number);
	}
	output(parr,&*len);
}

用C语言编程实现学生成绩管理程序，要求可以根据选择实现以下功能：（90分） 1、输入5个学生的姓名

//仅作参考
#include"stdio.h"
#include"conio.h"
#include"stdlib.h"
#include"string.h"
intstudentNum=0;
#defineMAXSTUDENT(1024)
#defineCheckData()\
{\
if(!studentNum)\
{\
printf("没有学生数据，按任意键返回……\n");\
getch();\
return;\
}\
}\
typedefstructStudent
{
intid;
intcScore;
intmathScore;
}Student;
voidClearStudent(Student*student)
{
memset((void*)student,0,sizeof(*student));
}
voidShowMainMenu()
{
system("cls");
printf("1.增加记录\n2.计算每个学生的总成绩\n3.计算每门课程的平均成绩\n4.按座号查询学生的成绩\n5.按总分排名\n6.输出前n名的学生的成绩\n7.修改成绩\n0.退出\n");
}
voidShowCountScore(constStudent*student)
{
system("cls");
CheckData();
for(inti=0;iprintf("学生%04d的总成绩：%d\n",(student+i)->id,(student+i)->cScore+(student+i)->mathScore);
printf("\n按任意键继续……");
getch();
}
voidShowClassAvg(constStudent*student)
{
system("cls");
CheckData();
doublesumc=0;
doublesummath=0;
for(inti=0;i{
sumc+=(student+i)->cScore;
summath+=(student+i)->mathScore;
}
printf("C语言平均成绩为：%lf\n",sumc/studentNum);
printf("数学平均成绩为：%lf\n",summath/studentNum);
printf("\n按任意键继续……");
getch();
}
voidAddStudent(Student*student)
{
system("cls");
if(studentNum==MAXSTUDENT)
{
printf("人数已满，按任意键返回……\n");
getch();
}
printf("分别录入座号、C语言成绩、数学成绩：\n");
intid=0;
intcScore=0;
intmathScore=0;
scanf("%d%d%d",&id,&cScore,&mathScore);
for(inti=0;iif((student+i)->id==id)
{
printf("座号重复，按任意键返回……\n");
getch();
return;
}
(student+studentNum)->id=id;
(student+studentNum)->cScore=cScore;
(student+studentNum)->mathScore=mathScore;
studentNum++;
}
voidSelectFromID(constStudent*student)
{
system("cls");
CheckData();
printf("输入查询ID:\n");
intid=0;
scanf("%d",&id);
printf("查询结果:\n");
for(inti=0;iif(id==(student+i)->id)
{
printf("C语言成绩为：%d\n数学成绩为：%d\n",(student+i)->cScore,(student+i)->mathScore);
break;
}
printf("\n按任意键继续……");
getch();
}
voidSortForCount(Student*student)
{
system("cls");
CheckData();
for(inti=0;i{
for(intj=studentNum-1;j>i;j--)
if(((student+j)->cScore+(student+j)->mathScore)>((student+j-1)->cScore+(student+j-1)->mathScore))
{
Studentstu;
stu=*(student+j);
*(student+j)=*(student+j-1);
*(student+j-1)=stu;
}
}
}
voidSortForN(Student*student,intn)
{
SortForCount(student);
if(!studentNum)
return;
n=n>studentNum?studentNum:n;
for(inti=0;iprintf("第%d名：\nID：%d\nC语言成绩为：%d\n数学成绩为：%d\n总分为：%d\n\n",i+1,(student+i)->id,(student+i)->cScore,(student+i)->mathScore,(student+i)->cScore+(student+i)->mathScore);
printf("\n按任意键继续……");
getch();
}
voidUpdateScore(Student*student)
{
system("cls");
CheckData();
printf("输入修改ID:\n");
intid=0;
scanf("%d",&id);
inti=0;
for(;iif(id==(student+i)->id)
break;
if(i==studentNum)
printf("\n查无此人，按任意键继续……");
else
{
printf("输入欲修改的C语言成绩、数学成绩：\n");
intcScore=0;
intmathScore=0;
scanf("%d%d",&cScore,&mathScore);
(student+i)->cScore=cScore;
(student+i)->mathScore=mathScore;
printf("\n按任意键继续……");
}
getch();
}
voidRunStudent(Student*student)
{
while(1)
{
ShowMainMenu();
charchGet=getch();
switch(chGet)
{
case'1':
AddStudent(student);
break;
case'2':
ShowCountScore(student);
break;
case'3':
ShowClassAvg(student);
break;
case'4':
SelectFromID(student);
break;
case'5':
SortForCount(student);
for(inti=0;iprintf("第%d名：\nID：%d\nC语言成绩为：%d\n数学成绩为：%d\n总分为：%d\n\n",i+1,(student+i)->id,(student+i)->cScore,(student+i)->mathScore,(student+i)->cScore+(student+i)->mathScore);
printf("\n按任意键继续……");
getch();
break;
case'6':
{
intn=0;
printf("输入N：\n");
scanf("%d",&n);
SortForN(student,n);
}
break;
case'7':
UpdateScore(student);
break;
case'0':
return;
default:
break;
}
}
}
intmain()
{
Student*allStudent=(Student*)malloc(MAXSTUDENT*sizeof(Student));
memset((void*)allStudent,0,MAXSTUDENT*sizeof(Student));
RunStudent(allStudent);
return0;
}

用c语言编写的学生成绩管理系统。 学生成绩管理系统要求实现如下功能：（1）录入学生基本信息，包含：学生