zong wu项.c

这是以项目开发为列的学生管理系统

   printf("Chinese:%.1f",avg);
   tot=0;
   for(i=0;i<=counts-1;i++)
   {
        tot+=stu[i].score[1];
   
   }	         
   avg=tot/5.0;
   wenttoxy(20,4);
   printf("English:%.1f",avg);
   tot=0;
   for(i=0;i<=counts-1;i++)
   {
        tot+=stu[i].score[2];
   
   }	   
   avg=tot/5.0;
   wenttoxy(20,5);
   printf("Physics:%.1f",avg);
   tot=0;
   for(i=0;i<=counts-1;i++)
   {
        tot+=stu[i].score[3];
   
   }	            
   avg=tot/5.0;wenttoxy(20,6);
   printf("Chemistry:%.1f",avg);
   tot=0;
   for(i=0;i<=counts-1;i++)
   {
        tot+=stu[i].score[4];
   
   }	       
   avg=tot/5.0;wenttoxy(20,7);
   printf("Math:%.1f",avg);
}
 else 
 {
   wenttoxy(5,21);
   printf("counts is empty");
 
 }
 }
/*******************************k表示第k门课程********************************************/
 void count(int k)
 { struct student temp;
   int i,j;int m=0;
if(counts!=0)
{
  for(i=0;i<=counts-2;i++)
	  for(j=i+1;j<=counts-1;j++)
		  if(stu[i].score[k]<stu[j].score[k])
		  {
			     temp=stu[i];
				 stu[i]=stu[j];
				 stu[j]=temp;
          }
		  if(0<counts && counts<=3)
            PrintInfo( stu, counts,1,0);
		  else
		  {
                  for(i=3;i<=counts-1;i++)
				  {
				       if(stu[2].score[k]==stu[i].score[k])
                              m++; 
				  
				  }    
				        m=m+3;
                 
              PrintInfo( stu, m, 1, 0,1);      
		  }
}
  else 
  {
     wenttoxy(5,21);
	 printf("the record is empty,any key to Main_Menu");
	 getch();
	 Main_Menu();
  
  
  }

}
/**********************************************************************************************/

/**********************************总分前三甲**************************************************/

/**********************************************************************************************/
 void Allscore()
 {  
    struct student temp;
   int i,j,k;
   k=0;
   if(counts!=0)
  {
     for(j=0;j<=counts-1;j++)
   {
	   stu[j].totscore=(stu[j].score[0]+stu[j].score[1]+stu[j].score[2]+stu[j].score[3]+stu[j].score[4]);
	   
   }
   for(i=0;i<=counts-2;i++)
        for(j=i+1;j<=counts-1;j++)
	{
           if(stu[i].totscore<stu[j].totscore)
			{	
				temp=stu[i];  
				stu[i]=stu[j];
				stu[j]=temp; 
			}
	}
    if(0<counts && counts<=3)
    	PrintInfo(stu,counts,1,0,1);
	else
	{
     for(i=3;i<=counts-1;i++)
		if(stu[2].totscore==stu[i].totscore)
          k++;

    }
 	  k=k+3; 
      PrintInfo( stu, k, 1, 0,1); 
   }
	else 
	{
	    wenttoxy(5,21);
		printf("counts is empty,anykey to Main_Menu()");
	
	}
  }
 /*********************************************************************************************/

/*************************** 统计学生单科和总分前三甲和平均分***********************************/

 /*********************************************************************************************/
  void Static()
{      char c;
    	system("cls");
    	wenttoxy(28,0);printf("****************************\n");
		wenttoxy(28,1);printf("*      Static Stu Data     *\n");
		wenttoxy(28,2);printf("****************************\n");
		wenttoxy(28,3);
         tongjiavg();
		 wenttoxy(28,7);printf("anykey to continue");getch();
        system("cls");
		wenttoxy(28,5);printf("1. top three of chinese       ");
       	wenttoxy(28,6);printf("2. top three of english       ");
		wenttoxy(28,7);printf("3. top three of math          ");
		wenttoxy(28,8);printf("4. top three of chemistry     ");
		wenttoxy(28,9);printf("5. top three of physic        ");
		wenttoxy(28,10);printf("6.top three of allscore");

	while(1)
		{		c=getche();
           if(!('0'<=c && c<='6'))
           {   
			wenttoxy(5,18);printf("your puts is wrong");
		   }
			
		   
		   else 
			   break;
        }
       switch(c)
	   { 
	      case '1':system("cls");count(0);break;
          case '2':system("cls");count(1);break;
          case '3':system("cls");count(2);break;
		  case '4':system("cls");count(3);break;
		  case '5':system("cls");count(4);break;
          case '6':system("cls");Allscore();break;   
		  case '0':Main_Menu();break;	  
	   }
	

}
/*********************************************************************************************

                               删除学生记录函数 s为学生的学号                                                                                                                                                                       

**********************************************************************************************/
void del(char s[4])
{  int i,j;
   
   for(i=0;i<=counts-1;i++)
	       if(strcmp(stu[i].sno,s)==0 )
		   {
				j=i+1;
				memcpy(&stu[i],&stu[j],sizeof(struct student));
			   for(j=i+1;j<=counts-1;j++)
			   {
				memcpy(&stu[j],&stu[j+1],sizeof(struct student));
			   }   
				printf("delete is secceed!!");
				counts--;
				getch( );
				wenttoxy(5,21);printf("anykey to see the result");
                PrintInfo( stu, counts, page,0,-1);

		   }   
        
}
 /*读取信息*/
int load_message()
{   
	
	int i,j,k;	char filename[18];
    FILE *fp;
	i=0;
	k=0;

do
  {
	  k=0;
    wenttoxy(36,5);
	printf("                                          ");
    wenttoxy(36,5);
	gotstring(filename,18);
	name_kongge(filename);
	j=strlen(filename);

    for(i=j-1;filename[i]!='\\' && i>0;i--)
		{ 
		   if(filename[i]=='|'||filename[i]=='/'||filename[i]==':'||filename[i]=='?')
				  k=1;
		}	
if(!isalpha(filename[0]) || filename[1]!=':' || filename[2]!='\\')
	{
		wenttoxy(5,21);
		printf("                                        ");
		wenttoxy(5,21);
		printf("The magic figure is incorrect!");
    }
else  if(k)
	 {
		 wenttoxy(5,21);
		 printf("                                           ");
         wenttoxy(5,21);
		 printf("the name of file is wrong");
     }
 else   if(j-i>8)
		{
			wenttoxy(5,21);
			printf("                                                ");
            wenttoxy(5,21);
			printf("the name of file over the lenth of 8");
		}
 else
	 break;     

  }while(1);
if((fp=fopen(filename,"rb"))==NULL)
	{
		wenttoxy(5,21);
		printf("Cann't open the file..press any key exit!");
		getch();
		exit(1);
	}

	for(i=0;;i++)//逐个读取学生信息
	{
		
		if(fread(&stu[i],sizeof(struct student),1,fp)!=1)
		{
			break;
        }
	}
	counts=i;
	fclose(fp);//关闭文件
	if(counts)
	{	
		wenttoxy(5,21);
		printf("load seccess,any key to main_menu!\n");
		getch();
	    Main_Menu(); 
	}
	else 
	{
		wenttoxy(5,21);
		printf("the file is empty,any key contiue");
		getch();

    }
}

 /*保存信息*/
int save(int counts,int k)
{
 char filename[18];
 FILE *fp;
 int i,j,m;
 do
  {
	  m=0;
    wenttoxy(36,5);
	printf("                                          ");
    wenttoxy(36,5);
	gotstring(filename,18);
	name_kongge(filename);
	j=strlen(filename);

    for(i=j-1;filename[i]!='\\' && i>0;i--)
		{ 
		   if(filename[i]=='|'||filename[i]=='/'||filename[i]==':'||filename[i]=='?')
				  k=1;
		}	
if(!isalpha(filename[0]) || filename[1]!=':' || filename[2]!='\\')
	{
		wenttoxy(5,21);
		printf("                                        ");
		wenttoxy(5,21);
		printf("The magic figure is incorrect!");
    }
else  if(m)
	 {
		 wenttoxy(5,21);
		 printf("                                           ");
         wenttoxy(5,21);
		 printf("the name of file is wrong");
     }
 else   if(j-i>8)
		{
			wenttoxy(5,21);
			printf("                                                ");
            wenttoxy(5,21);
			printf("the name of file over the lenth of 8");
		}
 else
	 break;     

  }while(1);
if((fp=fopen(filename,"w+"))==NULL)
 {
  printf("Read the document mistake!\n");
  getch();
  exit(1);
 }
 for(i=0;i<counts;i++)
 {
	if(fwrite(&stu[i],sizeof(struct student),1,fp)!=1)
	{	
		fsave=0;
		wenttoxy(5,21);
		printf("Write the document mistake!\n");
		break;
    }
else
   {
   	    
		fsave=1;
   } 
 }
   if(fsave)
   {
		wenttoxy(5,21);
		printf("You are secceed,any key to Main_Memu!");
   }	
   rewind(fp);
   fclose(fp);
   if(k==0)
   {
	    getch();
		Main_Menu();
   }
return i;

}
/**********************************************************************************************

保存学生纪录的菜单

*********************************************************************************************/
void Save_Stu_Data()
{      
	    system("cls");
 	    wenttoxy(28,0);printf("****************************\n");
		wenttoxy(28,1);printf("*            SAVE          *\n");
		wenttoxy(28,2);printf("****************************\n");
		wenttoxy(28,5);printf("PATH:");
  	    wenttoxy(29,6);printf("like this:d:\\dsfdf\wu.txt");
}
 void Load_Stu_Data()
{      
	    system("cls"); 
        wenttoxy(28,0);printf("****************************\n");
		wenttoxy(28,1);printf("*            LOAD          *\n");
		wenttoxy(28,2);printf("****************************\n");
		wenttoxy(28,5);printf("PATH:");
		wenttoxy(28,6);printf("like this:d:\\dsfdf\wu.txt");
	
}   
/********************************************************************************************/

/************************************主菜单界面**********************************************/

/********************************************************************************************/
  void Main_Menu()
 { 	    char a;
		system("cls");
		
        nowtime();
   		wenttoxy(28,0);printf("****************************\n");
		wenttoxy(28,1);printf("*       Main  Menu         *\n");
		wenttoxy(28,2);printf("****************************\n");
		wenttoxy(28,3);printf("1.Add Stu Info\n");
		wenttoxy(28,4);printf("2.Sort  Stu Info\n");
		wenttoxy(28,5);printf("3.Print Stu Info\n");
		wenttoxy(28,6);printf("4.Save Stu Data\n");
		wenttoxy(28,7);printf("5.Load Stu Data\n");
		wenttoxy(28,8);printf("6.Search Stu Info\n");
		wenttoxy(28,9);printf("7.Static Stu Data\n");
		wenttoxy(28,10);printf("0.Exit System\n");
		wenttoxy(5,18);printf("please enter a number[0-7]:");
		wenttoxy(0,24);printf("---Author:WuQianLiang---");
	
		
while(1)

		{   
					 a=getche();
					 if(a<'0' || a>'7')
					 { 
									wenttoxy(5,19); 
									printf("your puts is wrong ,please try again");
									getch();
						  
					 }
     	 switch(a)     
				{                    
						     case '0':Exit_System();  getch();out();
							 case '1':add() ; getch();   break;
							 case '2':Sort_Stu_Info();  getch()  ;break; 
							 case '3':print();PrintInfo( stu, counts, 1,0,1);getch();
							 case '4':Save_Stu_Data();save(counts,0);break;  
							 case '5':Load_Stu_Data();load_message();break;		 
							 case '6':Search_Stu_Info();getch(); break; 
							 case '7':Static();break;
		 
				}

		} 
 
}   

main()
{ 
 system("color 2e");
 Enter();
 Main_Menu();
}