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  1. #include<stdio.h>
  2. #include<stdlib.h>
  3. typedef struct Stack{
  4. 	int data;
  5. 	struct Stack* next;
  6. }Stack;
  7.  
  8. void push(Stack*, int);
  9. int pop(Stack*);
  10.  
  11. int main(){
  12. 	Stack* top=NULL;
  13.  
  14. 	push(top,2);
  15. 	printf("push %d \n",top->data);
  16.  
  17. 	push(top,3);
  18. 	printf("push %d \n",top->data);
  19.  
  20. 	push(top,1);
  21. 	printf("push %d \n",top->data);
  22.  
  23. 	printf("pop %d \n",pop(top));
  24. 	printf("pop %d \n",pop(top));
  25. 	printf("pop %d \n",pop(top));
  26. 	printf("pop %d \n",pop(top));
  27. 	return 0;
  28. }
  29.  
  30.  
  31. void push(Stack* top,int n){
  32. 	Stack* node = (Stack*)malloc(sizeof(Stack)); 
  33. 	node->data=n;
  34. 	node->next=top;
  35. 	top=node;
  36. }
  37.  
  38. int pop(Stack* top){
  39. 	int n=top->data;
  40. 	Stack* node=top;
  41. 	top=top->next;
  42. 	free(node);
  43. 	return n;
  44. }
Runtime error #stdin #stdout 0s 2164KB
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Standard output is empty
https://ideone.com/IaFtoG
language:
C (gcc 8.3)
created:
8 years ago
visibility:
public

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