studentresultsmanagementsystem.txt

该程序由用户输入信息,在保存在文件中 可以在文件中查询所录入的信息

#include<stdlib.h>
#include<stdio.h>
#include<graphics.h>
#include<dos.h>
#include<conio.h>
#include<string.h>
#define NULL 0
#define M 100            /*restore M student's information*/
#define N 100               /*restore N kinds of result*/
                            /*this two define is complant to change*/
struct student
{long num;
 char name[10];
 float score[N];
};
void myfun();
void myprint();
void fengmian();
void luru(struct student s[]);
void outinfor(struct student s[]);
void display(struct student s[],int m);
int mysearch(struct student *s,long n);
void delete(struct student s[],long m);
void change(struct student s[],long m);
void  reserve(struct student s[],int m);
long x; 
int j,i,k,t,a; 
static int r=0,b;
char choose,yesno,C;
struct student abc[M];

main()
 { textcolor(4);
   textbackground(15);
   fengmian();
   printf("\nHello! Welcome to exame\n");
   printf("\nEnter or not?(y/n):  ");
   scanf("%c",&yesno);
   switch(yesno)
      {  case 'Y':
         case 'y':myfun(); 
                  break;
         default:
               clrscr();
               printf(" \n\n\n\n\n\n\n");
               printf("\t\t**************Thank you for looking!**************");
               printf("\n\n\n\n\n\n\n");
               printf("\t\t**************Welcome to next time!****************");     
               break;
      }
  }
void myprint()                                     /*out menu*/
 { clrscr();
  printf("\n\n\n");
  printf("\t|****************************************************|\n");
  printf("\t|             choose the function (0~4):             |\n");
  printf("\t|****************************************************|\n");
  printf("\t|                  1--find information               |\n");
  printf("\t|                  2--delete information             |\n");
  printf("\t|                  3--change information             |\n");
  printf("\t|                  4--reserve information            |\n");
  printf("\t|                  0--exit                           |\n");
  printf("\t|****************************************************|\n");
 }
int mysearch(struct student *s,long n)           /*change information*/
{ int i;
  for(i=0;i<r;i++)
    if(s[i].num==n)
       break;
    if(i<r)
       return i;
    else
       return -1;
}
 void myfun()
    {
    printf("\ncreate information before comming in!\n");
    luru(abc);
    if(yesno=='Y'||yesno=='y')                 
    { 
     do
     { 
    myprint();
    printf("\n\n  Please choose sevice(0~4) :");      
    choose=getch();
    printf("\n\nYou chooce is %c \n",choose);
    switch(choose)
     {case '1':outinfor(abc);               /*display all information and find record*/
                break;
      case '2':printf("\nPlease input the delete number of the student\n");
                scanf("%ld",&x);         /*delete information*/
                while(x<0)                  /*deal with mistake*/
                {
                 printf("inputing is wrong,rewrite it!\n");
                 scanf("%ld",&x);
                }
               delete(abc,x);
                break;
      case '3':printf("Please input the change number of the student:\n");
               scanf("%ld",&x);           /*change information*/
               while(x<0)                 /*deal with mistake*/
               {
                printf("inputing is wrong,rewrite it!\n");
                scanf("%ld",&x);
               }
               change(abc,x);
               break;
     case '4':reserve(abc,r);
               break;
     case '0':clrscr();
              printf("\n\n\n\t\tThank you for looking!\n");
               break;
     default:printf("\nsorry! %c is a wrong choose!\n",choose);
      }
     if(choose=='0')
       break;
     printf("\n continue it or not?(Y/N)\n");
      do
      { yesno=getch();
      }while(yesno!='y'&&yesno!='Y'&&yesno!='n'&&yesno!='N');
    }while(yesno=='y'||yesno=='Y');   
     clrscr();
      printf("\n\n\n\n\n\n");
      printf("\t\tThank you for your using!");
      printf("\n\n\n");
      printf("\t\t\tGoodbye!");
   } 
}

void display(struct student s[],int m)          /*out all of information*/
{ int i,j,flag=0;
 printf("--------------------------------------------------------------------\n");

for(i=0;i<m;i++)
 {
  if(flag==0)
   { printf("num              name                         score\n");
    printf("------------------------------------------------------------------\n");
   }
  printf("%-17ld",s[i].num);
  printf("%-22s",s[i].name);
  for(j=0;j<b;j++)
    printf("%.1f\t",s[i].score[j]);
   printf("\n");
  flag=1;
  delay(10);
  }
 printf("-------------------------------------------------------------------\n");
}

void reserve(struct student s[],int m)            /*reserve information*/
 { FILE *sfp,*fp;
  int i,j,flag=0;
  sfp=fopen("d:\\dfile.txt","w");
  if(sfp==NULL)
    {printf("Destination dile not opened\n");
     exit(0);
    }
    for(i=0;i<m;i++)
      {fprintf(sfp,"%ld   %s   ",s[i].num,s[i].name);
       for(j=0;j<b;j++)
         fprintf(sfp,"%.1f  ",s[i].score[j]);
         fprintf(sfp,"\n");  
       }
  fclose(sfp);
  fp=fopen("d:\\dfile.txt","r"); 
  if(fp==NULL)
    {printf("Destination dile not opened\n");
      exit(0);
    }
  for(i=0;i<m;i++)
     {fscanf(fp,"%ld    %c    ",&s[i].num,s[i].name);
        for(j=0;j<b;j++)
           fscanf(fp,"%.1f  ",&s[i].score[j]);
     }
  fclose(fp);
  printf("\nyou information have been reserved!\n");
  printf("\nThis is your all information after reserve:");   /*out after reserve all information*/
  printf("\n\n");
  for(i=0;i<m;i++)
    {if(flag==0)
        printf("num              name                       score\n");
     printf("%-17ld",s[i].num);
       printf("%-22s",s[i].name);
     for(j=0;j<b;j++) 
          printf("%.1f\t",s[i].score[j]);  
     putchar('\n');
     flag=1;
     delay(30);
    }
}

void delete(struct student s[],long m)             /*delete information*/
 {int i,j;
  char w;
  for(i=0;i<r;i++)
     if(s[i].num==m)
        break;
  if(i<r)
    {
       printf("\nAre you sure delete the information(y/n)?\n");
      do{
        w=getch();
       }while(w!='Y'&&w!='y'&&w!='n'&&w!='N');
      if(w=='Y'||w=='y')
       {for(j=0;j<b&&i<r-1;j++)
          { s[i].num=s[i+1].num;
            strcpy(s[i].name,s[i+1].name);
            s[i].score[j]=s[i+1].score[j];
          }
            r--;
         printf("\n\nThe student's information have been deleted!\n");
       }
      else
         printf("\n\nthe student's information haven't been deleted!\n");
     }
   else
      printf("The student not exit!\n");
 
   
  }

void change(struct student s[],long m)          /*change information*/
  {int i,j,find;
   long tempnum;
   char tempname[10],c,T[90];
   float tempscore[N];
   for(i=0;i<r;i++)
     if(s[i].num==m)
        {
         find=i;
         break;
        }
   if(i==r)               /*out at normal*/
      printf("wu ci ren \n");
   else
      {printf("The student's information is:\n");
      printf("num:%ld\n",s[find].num);
      printf("name:%s\n",s[find].name);
      printf("Every results is:\n");
      for(j=0;j<b;j++)
        {printf("score %d:",j+1);  
        printf("%.1f\n",s[find].score[j]);
        }
      do
      { printf("\nPlease input the right num:\n");
        scanf("%ld",&tempnum);
       while(tempnum<0)                         /*deal with mistake*/ 
       { printf("inputting is wrong,rewrite it!\n");
        scanf("%d",&tempnum);
       }
       printf("Please input the right name:\n");
       gets(T);
       gets(tempname);
       printf("Please input the right result(0~100):\n");
        for(j=0;j<b;j++)
          { printf("score %d:",j+1);
           scanf("%f",&tempscore[j]);
          }
       for(i=0;i<r;i++)
         if((s[i].num==tempnum)&&i!=find)
         { printf("\nThe num have exited,do you want to input the other num(y/n)?\n");
         do
         { c=getche();
         }while(c!='y'&&c!='Y'&&c!='n'&&c!='N');
          putchar('\n');
           break;
         }
      if(i==r)           /* find is the place you want to change*/
       { s[find].num=tempnum;
        strcpy(s[find].name,tempname);
        for(j=0;j<b;j++)
        s[find].score[j]=tempscore[j];
       }
     }while(c=='y'||c=='Y');
   }
}

void luru(struct student s[])         /*input information */
{int i,j;
 char T[90];
  printf("\nPlease input the number of the students you want to save:");
  scanf("%d",&a);
  printf("\nPlease input the number of the results you want to save:");
  scanf("%d",&b);
    for(i=0;i<a;i++)
     { printf("\nNumber %d :",i+1);
      scanf("%ld",&s[i].num);
      while((s[i].num)<0)                      /*deal with mistake*/
      {
        printf("inputing is wrong,rewrite it!\n");
        scanf("%ld",&s[i].num);
      }
       printf("name:");  
       gets(T);
       gets(s[i].name);
       printf("%d kinds of result(0~100):\n",a);
       for(j=0;j<b;j++)
         {  printf("score %d:",j+1);
           scanf("%f",&s[i].score[j]);
         }
        r++;
     }
    printf(" \n\nThe information have been finshed!\n ");  
    printf("\nwhether into it or not?(Y/N)\n");
    yesno=getch();  
     printf("\n");
}


void outinfor(struct student s[])     /*display all information and find record*/
{ int k,i,j; 
  long x;
 float average,sum=0;
 printf("\nPlease input the find number of the student:\n");
 scanf("%ld",&x);
 printf("\nAll the student's information is:\n");
 display(s,r);
  while(x<0)                           /*deal with mistake*/
   { printf("Inputting is wrong,rewrite it!\n");
     scanf("%ld",&x);
   }
 k=mysearch(s,x);
 if(k!=-1)
   { printf("\nthe student's information that you find is:\n");
     printf("num:%ld\n",s[k].num);
     printf("name:%s\n",s[k].name);
     printf("Every kinds of result is:\n");
     for(j=0;j<b;j++)
        { printf("score %d:",j+1);
          printf("%.1f\n",s[k].score[j]);
        }
    for(j=0;j<b;j++)
       sum+=s[k].score[j];
     average=(float)sum/b;
     printf("average=%.1f\n",average);
    }
 else
    printf("\nHaven't look up the student whose number is %ld!\n",x);
 }

void fengmian()               /*out face of the excise*/
{
 printf("\n\n\n\n\n");
 printf("|~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~|\n");
 printf("|         students result administration system                 |\n");
 printf("|         school:South-Central university For Nationalities     |\n");
 printf("|         name:Li Yanqun                                        |\n");
 printf("|         num:05061035                                          |\n");
 printf("|         major:computer                                        |\n");
 printf("|         grade:2005                                            |\n");
 printf("|         class:two                                             |\n");
 printf("|         director teacher:Zeng Guangping                       |\n");
 printf("|~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~|\n");
}