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  1. #include<stdio.h>
  2. #include<stdlib.h>
  3.  
  4. struct stack{
  5.     int size;
  6.     int top;
  7.  
  8.     int *arr;
  9. };
  10. int isempty(struct stack*ptr){
  11.     if(ptr->top==-1)
  12.     {
  13.         return 1;
  14.     }
  15.     else{
  16.         return 0;
  17.     }
  18. };
  19. int isfull(struct stack*ptr){
  20.     if(ptr->top==ptr->size-1)
  21.     {
  22.         return 1;
  23.     }
  24.     else{
  25.         return 0;
  26.     }
  27. };
  28. void push(struct stack*ptr,int n){
  29.     if(ptr->top==ptr->size-1){
  30.         printf("stack is overflow");
  31.     }
  32.     else{
  33.         ptr->top++;
  34.         ptr->arr[ptr->top]=n;
  35.     }
  36. };
  37. int  pop(struct stack*ptr)
  38. {
  39.     if(ptr->top==-1){
  40.         printf("stack is underflow");
  41.     }
  42.     else{
  43.  
  44.       int n= ptr->arr[ptr->top];
  45.        ptr->top--;
  46.        return n;
  47.     }
  48. };
  49.  
  50. int main(){
  51.     struct stack*sp=(struct stack*)malloc(sizeof(struct stack));
  52.     sp->size=8;
  53.     sp->top=-1;
  54.  
  55.     struct stack *arr=(struct stack*)malloc(sp->size*sizeof(int));
  56. printf(" before pushing stack is  empty:%d\n",isempty(sp));
  57. printf("before pushing stack is  full:%d\n",isfull(sp));
  58. push(sp,8);
  59. push(sp,7);
  60. push(sp,89);
  61. push(sp,9);
  62. push(sp,5);
  63. printf(" after pushing stack is  empty:%d\n",isempty(sp));
  64. printf("after pushing stack is  full:%d\n",isfull(sp));
  65. printf("the element is pop up in this stack:%d\n",pop(sp));
  66.     return 0;
  67. }
Success #stdin #stdout 0s 5304KB
comments (?)
stdin
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Standard input is empty
stdout
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 before pushing stack is  empty:1
before pushing stack is  full:0
 after pushing stack is  empty:0
after pushing stack is  full:0
the element is pop up in this stack:5
https://ideone.com/j9VaDO
language:
C (gcc 8.3)
created:
11 days ago
visibility:
public

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