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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4.  
  5. typedef void Elem;
  6.  
  7. typedef struct stos {
  8.   Elem* e;
  9.   struct stos *next;
  10. } Stos;
  11.  
  12. Elem* pop(Stos **s) {
  13.     if (*s==NULL) exit(EXIT_FAILURE);
  14.     Stos* help = *s;
  15.     Elem* e = help->e;
  16.     *s = (*s)->next;
  17.     free(help);
  18.     return e;
  19. }
  20.  
  21. void push(Stos **ss, Elem* elem) {
  22.    Stos *help;
  23.  
  24.    help = (Stos *)malloc(sizeof(Stos));
  25.    help->e = elem;
  26.    help->next = *ss;
  27.    *ss = help;
  28. }
  29.  
  30.  
  31.  
  32.  
  33. int main()
  34. {
  35.     	Stos *s = NULL;
  36.     	Stos *s2 = NULL;
  37.     	int *a = (int*)malloc(sizeof(int));
  38.     	*a=10;
  39.         push(&s, a);
  40.  
  41.         char *b=(char*)malloc(sizeof(char));
  42.         *b='a';
  43.         push(&s2, b);
  44.  
  45.         a=(int*)malloc(sizeof(int));
  46.         *a=14;
  47.         push(&s, a);
  48.  
  49.         a = (int*)pop(&s);
  50.         printf("%d\n", *a);
  51.         free(a);
  52.         a = (int*)pop(&s);
  53.         printf("%d\n", *a);
  54.         free(a);
  55.  
  56.         b = (char*)pop(&s2);
  57.         printf("%c\n", *b);
  58.         free(b);
  59.         return 0;
  60. }
  61.  
Success #stdin #stdout 0s 1852KB
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Standard input is empty
stdout
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14
10
a
https://ideone.com/aXD4Q
language:
C (gcc 8.3)
created:
12 years ago
visibility:
secret

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