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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. #include <string.h>
  4.  
  5. struct el_stack {
  6. 	char symbol;
  7. 	struct el_stack * new;
  8. };
  9.  
  10. typedef struct el_stack *p_el_stack;
  11.  
  12. void push(p_el_stack *head, char x)
  13. {
  14. 	p_el_stack tmp = (p_el_stack)malloc(sizeof(struct el_stack));
  15. 	tmp->symbol = x;
  16. 	tmp->new = *head;
  17. 	*head = tmp;
  18. }
  19.  
  20. char pop (p_el_stack *head)
  21. {
  22. 	char resymb;
  23. 	p_el_stack tmp = *head;
  24. 	resymb = tmp->symbol;
  25. 	*head = tmp->new;
  26. 	free(tmp);
  27. 	return(resymb);
  28. }
  29.  
  30.  
  31. int main(void) {
  32. 	char str[255];
  33. 	p_el_stack *stack;
  34. 	fgets(str,255,stdin);
  35. 	int i,j;
  36. 	for(i=0; i<strlen(str); i++) push(&stack, str[i]);
  37. 	for(j=0; j<i; j++) str[j]=pop(&stack);
  38. 	printf("%s\n",str);
  39. 	return 0;
  40. }
Success #stdin #stdout 0s 2292KB
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�W�
https://ideone.com/JkCgzU
language:
C (gcc 8.3)
created:
8 years ago
visibility:
public

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