مجموعه برنامه های نوشته شده به زبان C و ++C

[ali_1369]

قابلیت های برنامه:
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;

}



 

[Salar Ashgi]

کد زیر بروش بازگشتی عناصر یک آرایه رو چاپ میکنه :

#include <iostream>

#include <conio>

void Print_array(int a[],int n){

if(n==1)

 cout<<a[n-1]<<" ";

 else{

  Print_array(a,n-1);

   cout<<a[n-1]<<" ";

   }

}

//===============================

int main(){

int a[]={2,6,8,5,3};

Print_array(a,5);

getch();

}

[Salar Ashgi]

#include <iostream>

#include <conio>

int Rec_Add(int a,int b){

 if(b==0)

  return a;

  else

   return Rec_Add(a+1,b-1);

}

//===========================

int Rec_Multiply(int a,int b){

if(b==1)

 return a;

 else

 return a+Rec_Multiply(a,b-1);

}

[kitten]

سلام دوستان
اینم یه برنامه که یه پشته را پیاده سازی می کنه و یه سری اطلاعات را داخلش میریزه و بعدش دوباره اونها را خارج می کنه (برای اموزش خوبه)

#include <stdio.h>

#include <conio.h>

int top;

struct stack

{

    int data;

    struct stack *next;

};

bool isempty(struct stack *x)

{

    if(!top) return true;

    else return false;

}



int pop(struct stack *x,bool rm) 

{    if(!isempty(x))

    {

        struct stack *y=x;

        for(int i=0;i<top-1;i++) x = x->next;

        int data = x->data;

        if(rm)

        {

            for(int i=0;i<top-2;i++) y = y->next;

            y->next = NULL;

            x = y;

            top--;

        }

        return data;

    }else 

    {

        printf("It is Empty!");

        return 0;

    }

}

void push(struct stack *x,int data) 

{

    for(int i = 0;i<top;i++) x = x->next;

    x->data = data;

    x->next = new struct stack;

    top++;

}

int main() 

{

    top = 0;

    struct stack *t = new struct stack;

    push(t,1);

    push(t,2);

    push(t,3);

    printf("%d",pop(t,true));

    printf("%d",pop(t,false));

    printf("%d",pop(t,true));

    printf("%d",pop(t,false));

    printf("%d",pop(t,false));

    getch();

    return 0;

}