پروژه هاي برنامه نويسي

[آبجی]

وارد کردن اطلاعات دانشجویان؛جستجو بر اساس دو فیلد؛خذف دانشجو بر اساس دو فیلد؛ذحیره اطلاعات در فایل؛مرتب کردن اسامی بر اساس الفبای لاتین و.....

#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
#include<string.h>
#define MAX 100
struct  student {
    char   name[10] ;
    float  avrage ;
    int    unit ;
    int    amount_course ;
    int student_number;
} st[MAX];
void first_evalution(void);
void  enter(void);
void search(void);
void search2(void);
void del_name(int);
void  display(void);
void top_student();
void fail_student();
void show(int *, int);
void  title(int *);
int menu_select(void);
int spare_space(void) ;
void save (void);
void load(void);
void in_style(int l);
void delete_main(void);
void delete_name2(void);
void search_main(void);
static int l;
int main(void)
{
   char choice ,ans;
   first_evalution();
   for(;;){
    choice = menu_select() ;
    switch(choice) {
        case 1: enter();in_style(l); break;
        case 2: search_main(); break ;
        case 3: top_student();  break;
        case 4: fail_student(); break ;
        case 5: delete_main();  break ;
     case 6: save();break;
     case 7: load();break;
     case 8: display();break;
     case 9:{
     printf("are you sure you want to quit ?(y/n)");
     ans=getche();
     clrscr();
     if(ans=='y')
      exit(0);break;    }
    }
   }
}
void first_evalution(void)
{
 register int i ;
 for(i = 0; i < MAX; ++i)
     st[i].name[0] = '\0' ;
}
int menu_select(void)
{
   char s[10];
   int g ;

   printf("\n\t(1) <<      enter information       >>");
   printf("\n\t(2) <<       search menu            >>");
   printf("\n\t(3) <<     show top students        >>");
   printf("\n\t(4) <<     show fail students       >>");
   printf("\n\t(5) <<        delete menu           >>");
   printf("\n\t(6)<<          save info            >>");
   printf("\n\t(7)<<          load info            >>");
   printf("\n\t(8)<<        display info           >>");
   printf("\n\t(9)<<      quit from program        >>");
   do {
 
  printf("\n\t      Please enter your choice(1-9): ") ;
  gets(s);
  clrscr();
  g = atoi(s);
       } while(g < 0 || g > 9) ;
   return (g) ;
}
void enter(void)
{
 char name3[30];
   float grade, sum_grade = 0;
   int t,  unit, sum_unit = 0 ,j,i;
   t = spare_space() ;
   if(t == -1){
      printf("\n sorry the list is full.....press any key to continue");
      getch();
      return ;
   }
   printf("\n\t enter name:") ;
   gets(st[t].name) ;
     strcpy(name3,st[t].name);
     for(i=0;i<t && st[i].name[0] ;i++)
     {
   if(strcmp(st[i].name,name3)==0){
   printf("the similar name is already in the list. contine any way?(y,n)");
     if(getche()=='n')
     {
     clrscr();
     st[t].name[0]='\0';
   return ;}}
     }
   l++;
   clrscr();
   printf("\n\tenter student number:") ;
   scanf("%d", &st[t].student_number) ;
   clrscr();

   printf("\n\tenter number of course:") ;
   scanf("%d", &st[t].amount_course) ;
   clrscr();
   for(j = 1; j <= st[t].amount_course; j++) {
 
       printf("\n\tenter grade for course  %d:",j);
       scanf("%f", &grade) ;
       clrscr();
       printf("\n\tenter unit of course  %d:", j);
       scanf("%d", &unit) ;
       clrscr();
       sum_grade += grade * unit ;
       sum_unit += unit ;
   }
   st[t].unit=sum_unit;
   st[t].avrage = sum_grade / sum_unit ;
 
 }
 
 
int spare_space(void)
{
    register int i ;
    for(i = 0; st[i].name[0] && i< MAX ; ++i);
    if(i == MAX) return -1 ;
    return i ;
}
void delete_main(void)
{
char c[10];
int h;
do {
printf("how do you want to delete info ?");
printf("\n\t\t\t(1)=base on name");
printf("\n\t\t\t(2)=base on student number");
gets(c);
clrscr();
h=atoi(c);} while(h<0 || h>2);
if(h==1){
delete_name2();}
if(h==2){
del_name(l);}
if(h!=1 && h!=2)
return;
}

void del_name(int l)
{
    int i ;
    char ans;
    printf("\n\tenter record #(0 - %d):",l) ;
    scanf("%d", &i) ;
    printf("are u sure you want to delete record %d?(y/n)");
    ans=getche();
    clrscr();
    if(ans=='y'){
  if( st[i].name[0]){
       st[i].name[0]='\0' ;
    printf("deleted  Successfully !!");}
       else if(!st[i].name[0])
       printf("this record is not in the list....press any key to continue...."); }
       getch();
       clrscr();
}
void delete_name2(void)
{
 char name2[30],ans;
 int i,h,w=0;
 printf("\tenter a name to delete");
 gets(name2);
 printf("are you sure you want to delete %s information?(y/n)",name2);
 ans=getche();
 clrscr();
 if(ans=='y'){
 for(i=0;i<MAX;i++)
 {
  if(strcmp(st[i].name,name2)==0) {
   h=i;
   w=1;  }}
 if(w==1){
 st[h].name[0]='\0' ;
 printf("deleted  Successfully !!");
 }
 if(w==0) {
 printf("the one you are looking for is not in the list.press any key to continue.........."); }}
  getch();
  clrscr();

 }
void display(void)
{
    int i, r = 0;
     ;
    title(&r) ;
    for(i = 0; i < MAX; ++i)
       if(st[i].name[0])
    show(&r, i);
gotoxy(114,r);

    printf("\n\t please  press any key to continue ") ;
    getch();
    clrscr();
gotoxy(29,r+1);
    getch();
}
void fail_student(void)
{
 int i, r=0 ,a=0;

    for(i = 0; i < MAX; ++i){
      if(st[i].name[0] && st[i].avrage < 12){
       a=1;
       title(&r);
  show(&r, i) ; }
    }
    if(a==0){
    printf("there is no fail student!");}
 
gotoxy(25,r+1);
    printf(" please press any key to continue ") ;
    getch();
    clrscr();
  }
void top_student(void)
{
    int i, r=0 ,a=0;

    for(i = 0; i < MAX; ++i){
      if(st[i].name[0] && st[i].avrage >= 17){
       a=1;
       title(&r);
  show(&r, i) ; }
    }
    if(a==0){
    printf("there is no top student!");}
 
gotoxy(25,r+1);
    printf(" please press any key to continue ") ;
    getch();
    clrscr();
  }
void title(int *r)
{
    *r = 1;
gotoxy(25,*r);
    printf(" <<  all the  info in list are:  >>");
 

gotoxy(6,*r+2);
    printf("     name       avrage     ");
    printf("   unit        amount_course            st_no      ");
gotoxy(6,*r+3);
    printf("     ________     ________ ");
    printf("     ______     ______                 ____   ");
    *r = 4;
}
void show(int *r, int i)
{
gotoxy(14,*r);
    printf("%s ", st[i].name) ;
gotoxy(26,*r);
    printf("%.2f ", st[i].avrage) ;
gotoxy(40,*r);
    printf("%d ", st[i].unit) ;
gotoxy(54,*r);
    printf("%d ", st[i].amount_course) ;
gotoxy(70,*r);
    printf("%u ", st[i].student_number) ;
 (*r) ++ ;
}
void search_main(void)
{
char j[10];
int y;
do {
printf("how do you want to search?");
printf("\n\t\t\t(1)=base on name");
printf("\n\t\t\t(2)=base on student number");
gets(j);
clrscr();
y=atoi(j);} while (y<0 || y>2);
if(y==1){
search();}
if(y==2){
search2();}
if(y!=1 && y!=2)
return ;
}
void search(void)
{
 int i,r=0,m=0,t=0;
 char name2[30];
 printf("enter a name to search");
  gets(name2);
  clrscr();
for(i=0;st[i].name[0];i++)
{
 if(strcmp(name2,st[i].name)==0){
 t=i;
  m=1; }}
  if(m==1){
 title(&r) ;
 show(&r, t);}
 if (m==0)

  printf("the one you are looking for is not in the list......press any key to continue");
  getch();
  clrscr();
}
 

void save(void)
{
FILE *fp ;
   register int i ;
   fp = fopen("project", "wb");
   if(!fp)  {
       printf("\n cannot open file press a key ...");
       getch() ;
    clrscr();
       return ;
   }
   for(i = 0 ; i < MAX ; i++)
     if(*st[i].name)
 fwrite(&st[i], sizeof(struct student), 1, fp) ;
    clrscr() ;
    gotoxy(20, 10) ;
    printf("data saved.press a key.");
    getch() ;
    clrscr();
}

void load(void){
FILE *fp ;
   register int i ;
   fp = fopen("project", "rb");
   if(!fp) {
      printf("\n cannot open file press a key ...");
      getch() ;
   clrscr();
      return ;
   }
   for(i = 0 ; i < MAX; i++) {
     fread(&st[i], sizeof(struct student), 1, fp);
     if(feof(fp)) {
 clrscr() ;
 gotoxy(20,10) ;
 printf("data are  loaded.press a key...........");
 getch() ;
 clrscr();
 return ;
     }
   }

}
 

void search2(void)
{
 int i,num2,r=0,a;
 printf("enter the student number for the one you are looking for");
 scanf("%d",&num2);
   a=0;
 for(i=0;i<MAX;i++){
 if(st[i].student_number==num2){
 a=1;
 title(&r);
 show(&r,i);}}
 if(a==0)
 printf("the one you are lookig for is not in the list...press any key to continue...");
 getch();
 clrscr();
}
void in_style(int l)
{
 int i,j;
 char name2[30];
 struct student st1={0};
  for(i=l-1;i>0;i--){
   for(j=0;j<i;j++)
    if(strcmp(st[j].name,st[j+1].name)>0){
         st1=st[j];
         st[j]=st[j+1];
         st[j+1]=st1;
         }
 

}
return;
}