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Код: Выделить всё

#include <stdio.h>
#include <conio.h>
#include <alloc.h>

struct ptr1{
   int data;
   struct ptr1 *next;
};

typedef struct ptr1 spis1;
typedef spis1 *spis;

void dobav(spis *);
void printl(spis);
void menu();
void add(spis *,spis *);

main(void)
{
   int re;
   spis a=NULL;
   spis b=NULL;
   menu();re=0;
   scanf("%d",&re);
   while ((re!=5))
     {
       switch (re)
     {
         case 1:dobav(&a);break;
         case 2:dobav(&b);break;
         case 3:add(&a,&b);break;
         case 4 :p rintl(a);break;
     }
      menu();
      scanf("%d",&re);
    }
return(0);
}

void dobav(spis *c)
{
   spis nov,cur,pr=NULL;
   int key;
   nov=(spis )malloc(sizeof(spis1));
   cur=*c;
   printf("enter num ");
   scanf("%d",&key);
   if (nov!=NULL)
    {
      nov->data=key;
      while (cur!=NULL)
    {
       pr=cur;
       cur=cur->next;
     }
      nov->next=cur;
      if (pr==NULL) *c=nov;
    else pr->next=nov;
     }
   printl(*c);
}

void printl(spis s)
{
   spis cur;
   printf("*** begin  ***\n");
   cur=s;
   while (cur!=NULL)
     {
       printf("%d\n",cur->data);
       cur=cur->next;
      }
   printf("*** end ***\n");
   getchar();getchar();
}

void add(spis *a1,spis *b1)
{
   spis cur;
   cur=*a1;
   while (cur->next!=NULL)
     cur=cur->next;
  cur->next=*b1;
   printf("marged");
   getchar();getchar();
}

void menu()
{
   clrscr();
   printf("1-add first\n2-add second\n3-marge\n");
   printf("4-see \n5-exit\n");
}