PUSH and POP operations in Stack in C Program

Two Basic Operations on Stack

PUSH
POP

Push and Pop operation in stack in C : Algorithm

PUSH(Stack, N, Item)

This algorithm will insert Item at top to Stack having size N. Here initial index for stack is 0.

Copy to Clipboard

POP(Stack, N)

This algorithm will delete the top element from the Stack having size N. Here initial index for stack is 0.

Copy to Clipboard

C program to implement push and pop operations on a stack using an array is as follows:

Copy to Clipboard

#include<stdio.h>
#include<conio.h>

#define N 5
int top = -1;
int stack[N];

//Function prototypes
void push(int item);
int pop();

void main()
{
      int item, choice, cont = 1;
      clrscr();

while(cont == 1)
      {
            printf("\n1.Push onto stack.\n");
            printf("\n2.Pop from stack.\n");

printf("\nEnter your choice: ");
            scanf("%d",&choice);

switch(choice)
            {
                  case 1:
                        printf("\nEnter the value of item:");
                        scanf("%d",&item);
                        push(item);
                        break;
                  case 2:
                        item = pop();
                        if(item != NULL)
                        {
                            printf("\nItem popped out: %d\n",item);
                        }                       
                        break;
                  default:
                        printf("\nInvalid choice.\n");
                        break;
            }
            printf("\nDo you want to continue (1/0): ");
            scanf("%d",&cont);
      }
      getch();
}

//Function Definition for push operation
void push(int item)
{
      if(top >= N-1)
      {
            printf("\nStack Overflow. Push not possible.\n");
      }
      else
      {
            top = top+1;
            stack[top] = item;
      }
}

//Function for pop operation
int pop()
{
      int item = NULL;

if(top == -1)
      {
            printf("\nStack Underflow. Pop not possible.\n");
      }
      else
      {
            top = top-1;
            item = stack[top+1];
            stack[top+1]=NULL;
      }
      return(item);
}

Output :

Copy to Clipboard

1.Push onto stack.
2.Pop from stack.
Enter your choice: 1
Enter the value of item:10
Do you want to continue (1/0): 1

1.Push onto stack.
2.Pop from stack.
Enter your choice: 1
Enter the value of item:20
Do you want to continue (1/0): 1

1.Push onto stack.
2.Pop from stack.
Enter your choice: 11
Enter the value of item:30
Do you want to continue (1/0): 1

1.Push onto stack.
2.Pop from stack.
Enter your choice: 2
Item popped out: 30
Do you want to continue (1/0): 1

1.Push onto stack.
2.Pop from stack.
Enter your choice: 1
Enter the value of item:40
Do you want to continue (1/0): 1

1.Push onto stack.
2.Pop from stack.
Enter your choice: 1
Enter the value of item:50
Do you want to continue (1/0): 1

1.Push onto stack.
2.Pop from stack.
Enter your choice: 1
Enter the value of item:60
Do you want to continue (1/0): 1

1.Push onto stack.
2.Pop from stack.
Enter your choice: 1
Enter the value of item:70
Stack Overflow. Push not possible.
Do you want to continue (1/0): 1

1.Push onto stack.
2.Pop from stack.
Enter your choice: 2
Item popped out: 60
Do you want to continue (1/0):0

Important Topics :

Infix to Postfix conversion using Stack with C Program and Algorithm

Important Question Answers of Stack

Technology. Knowledge. Information. Science

PUSH and POP operations on stack using an array with C program

Two Basic Operations on Stack

Push and Pop operation in stack in C : Algorithm

C program to implement push and pop operations on a stack using an array is as follows:

Output :

One Comment

Leave a Reply Cancel reply

PUSH and POP operations on stack using an array with C program

Two Basic Operations on Stack

Push and Pop operation in stack in C : Algorithm

C program to implement push and pop operations on a stack using an array is as follows:

Output :

Share This Article!

Related Posts

Address Calculation in 1d Array with example

Bubble Sort in Python

Sorting Algorithms in Python

Method Resolution Order in Python (MRO)

Difference between Binary Tree and Binary Search Tree

Searching Algorithms in Python

One Comment

Leave a Reply Cancel reply