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  1. #include<stdio.h>
  2. #define S 3
  3. int s[S],top=-1,i;
  4. void push()
  5. {
  6. 	if(top==S-1)
  7. 	{
  8. 		printf("stack is overflow\n");
  9. 	}
  10. 	top++;
  11. 	scanf("%d",&s[top]);
  12. }
  13. void pop()
  14. {
  15. 	if(top==-1)
  16. 	{
  17. 		printf("stack is empty\n");
  18.  
  19. 	}
  20. 	else
  21. 	{
  22. 		top=top-1;
  23. 	}
  24.  
  25. }
  26. void display()
  27. {
  28. 	for(i=top;i>=0;i--)
  29. 	{
  30. 		printf("%d",s[i]);
  31. 	}
  32. }
  33. void peek()
  34. {
  35. 	printf("%d",s[top]);
  36. }
  37. void main()
  38. {
  39. 	int n;
  40. 	 printf("Stack menu\n");
  41. 	 printf("\n1.push\n2.pop\n3.display\n4.peek\n5.exit\n");
  42. 	 printf("enter option\n");
  43. 	 scanf("%d",&n);
  44. 	 switch(n)
  45. 	 {
  46. 	 	case 1:push();break;
  47. 	 	case 2:pop();break;
  48. 	 	case 3:display();break;
  49. 	 	case 4:peek();break;
  50. 	 	case 5:exit(0);
  51. 	 	default:printf("invalid option");
  52. 	 }
  53. }
Success #stdin #stdout 0s 5516KB
comments (?)
stdin
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1
stdout
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Stack menu

1.push
2.pop
3.display
4.peek
5.exit
enter option
https://ideone.com/WwvAfP
language:
C (gcc 8.3)
created:
2 years ago
visibility:
public

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