Stuff

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <conio.h>
#include <time.h>
#include <malloc.h>


 int menu(void);
 int DimiourgiaPinaka (int *pinakas);
 void EmfanisiPinaka(int *pinakas, int length);

int main(void)
{
    int choice,*pinakas,megethos;
    
     do{
    choice=menu();
		switch(choice){
	   case 1:megethos=DimiourgiaPinaka(pinakas); break;
	   case 2:getch(); break;
	   case 3:break;
	   case 4:EmfanisiPinaka(pinakas,megethos); break;
	   case 5:break;
	   case 6:break;
	   case 7:break;
	   case 8:break;
	   case 9:break;
	   case 0:exit(0);
	   }
	 }while(1);
         
    
    free(pinakas);
    
    } 
      
    
    
    int menu(void){
  int choice;
  do{
	printf("1.Dimiourgia pinaka \n");
	printf("2.Apothikeusi pinaka se arxeio \n");
	printf("3.Anaktisi pinaka apo arxeio \n");
	printf("4.Emfanisi pinaka \n");
	printf("5.Bubblesort \n");
	printf("6.Insertion Sort \n");
	printf("7.Quick Sort 1 \n");
	printf("8.Quick Sort 2 \n");
	printf("9.Quick Sort 3 \n");
    printf("0.Eksodos apo tin efarmogi \n");
	printf("choice: ");
	scanf("%d",&choice);         
	}while (choice!=0&&choice!=1 && choice!=2 && choice!=3 && choice!=4 && choice!=5
			   &&choice!=6 && choice!=7 && choice!=8 && choice!=9);
	return choice;
}
     
     
     
     int DimiourgiaPinaka (int *pinakas)
     {
         int megethos,epilogi,key=0,i,test;
         
     printf("Dwste to epithymito megethos tou pinaka :\n");
     scanf("%d" , &megethos);
   
     
     pinakas=malloc(megethos * sizeof(int));
     if(pinakas==NULL) printf("Den yparxei arketi mnini gia dimiourgia enos pinaka \n");
     
     
     
     while(key==0) 
     {
        printf("Patiste 1 gia Ataksinomito pinaka h 2 gia Sxedon Taksinomimeno pinaka : \n");
        scanf("%d",&epilogi);
     
     if(epilogi==1) 
           {
              printf("EPILOGH 1:Ataksinomitos pinakas --> to aitima sas einai se ekseliksi...\n");
              
              /*for (i=0; i<megethos; i++)  
              {
                  printf("dwse timi: \n");
                  scanf("&d",&test);
                  pinakas[i]=test;
                  }*/
              srand(time(NULL));
           for (i=0; i<megethos; i++)
              {
                  
                  pinakas[i]=rand()%10;
                  printf("%d\n",pinakas[i]);
              }                 
              key=1;
         getch();                                                
           }
     
     else if (epilogi==2)
          {    
               key=1;
          }
      
     else 
          {
           printf("--------------------Dwsate lathos epilogi--------------------\n"); 
           key=0;
     
          }
     
    
    }
     return megethos;
     }
     
     
     void EmfanisiPinaka(int *pinakas, int length)
      {
           int i=0;
           for( i=0; i<length; i++) printf(" To stoixeio %d tou pinaka einai : %d\n ",i+1,pinakas[i]);
      }