C program to perform stack operations

In this program, we are going to share how to perform stack operations using C programming language. If you are a beginner and want to start learning the C programming, then keep your close attention in this tutorial as I am going to share a C program to perform stack operations.

C program to perform stack operations

Copy the below C program and execute it with the help of C compiler.

#include<stdio.h>

#include<conio.h>

#include<stdlib.h>
 
#define MAX 50
int size;
 
struct stack {
   int arr[MAX];
   int top;
};
 
void init_stk(struct stack *st) {
   st->top = -1;
}
 
void push(struct stack *st, int num) {
   if (st->top == size - 1) {
      printf("\nStack overflow(i.e., stack full).");
      return;
   }
   st->top++;
   st->arr[st->top] = num;
}
 
int pop(struct stack *st) {
   int num;
   if (st->top == -1) {
      printf("\nStack underflow(i.e., stack empty).");
      return NULL;
   }
   num = st->arr[st->top];
   st->top--;
   return num;
}
 
void display(struct stack *st) {
   int i;
   for (i = st->top; i >= 0; i--)
      printf("\n%d", st->arr[i]);
}
 
   int main() {
   int element, opt, val;
   struct stack ptr;
   init_stk(&ptr);

   printf("\nEnter Stack Size :");
   scanf("%d", &size);

   while (1) {
      printf("\n\ntSTACK PRIMITIVE OPERATIONS");
      printf("\n1.PUSH");
      printf("\n2.POP");
      printf("\n3.DISPLAY");
      printf("\n4.QUIT");
      printf("\n");

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

      switch (opt) {
      case 1:
         printf("\nEnter the element into stack:");
         scanf("%d", &val);
         push(&ptr, val);
         break;
      case 2:
         element = pop(&ptr);
         printf("\nThe element popped from stack is : %d", element);
         break;
      case 3:
         printf("\nThe current stack elements are:");
         display(&ptr);
         break;
      case 4:
         exit(0);
      default:
         printf("\nEnter correct option!Try again.");
      }
   }
 
   return (0);

}

#include<stdio.h>

#include<conio.h>

#include<stdlib.h>

#define MAX 50

int size;

struct stack {

int arr[MAX];

int top;

};

void init_stk(struct stack *st) {

st->top = -1;

}

void push(struct stack *st, int num) {

if (st->top == size - 1) {

printf("\nStack overflow(i.e., stack full).");

return;

}

st->top++;

st->arr[st->top] = num;

}

int pop(struct stack *st) {

int num;

if (st->top == -1) {

printf("\nStack underflow(i.e., stack empty).");

return NULL;

}

num = st->arr[st->top];

st->top--;

return num;

}

void display(struct stack *st) {

int i;

for (i = st->top; i >= 0; i--)

printf("\n%d", st->arr[i]);

}

int main() {

int element, opt, val;

struct stack ptr;

init_stk(&ptr);

printf("\nEnter Stack Size :");

scanf("%d", &size);

while (1) {

printf("\n\ntSTACK PRIMITIVE OPERATIONS");

printf("\n1.PUSH");

printf("\n2.POP");

printf("\n3.DISPLAY");

printf("\n4.QUIT");

printf("\n");

printf("\nEnter your option : ");

scanf("%d", &opt);

switch (opt) {

case 1:

printf("\nEnter the element into stack:");

scanf("%d", &val);

push(&ptr, val);

break;

case 2:

element = pop(&ptr);

printf("\nThe element popped from stack is : %d", element);

break;

case 3:

printf("\nThe current stack elements are:");

display(&ptr);

break;

case 4:

exit(0);

default:

printf("\nEnter correct option!Try again.");

}

return (0);

}

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C program to perform stack operations

C program to perform stack operations

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