Program 3


Program  3

#include<stdio.h>

#include<conio.h>

#include<stdlib.h>

#include<string.h>

#define MAX 5

int stack[max],top=-1;

char stack1[max],top1=-1;



void push()

{

  int ele;

  if(top<MAX-1)

  {

   printf("enter the to be inserted into the stack:\n");

   scanf("%d",&ele);

   stack[++top]=ele;

  }

 else

      printf("\n stack is full\n");

      return;

}



void pop()

{

 if(top!=-1)

 {

   printf("\n the element deleted from the stack is:%d\n",stack[top--]);

 }

 else

  printf("\n stack is empty\n");

  return;

}



void palindrome()

{

 int i,count=0,len;

 char str[100];

 printf("\n entering to check whether it is palindrome or not:");

 scanf("%s",str);

 len=strlen(str);

 for(i=0;i<len;i++)

 {

   if(str[i]==stack1[top1--])

   count++;

}

if(count==len)

  printf("\n %s is a palindrome string\n",str);

else

  printf("\n %s is not a palindrome string\n",str);

  return;

}



void check()

{

  if(top>=MAX-1)

     printf("stack is overflow\n");

  elseif(top==-1)

     printf("stack is underflow\n");

  else

     printf("stack operation can be performed\n");

}



void display()

{

  int i;

  if(top==-1)

  {

    printf("\stack is empty\n");

  }

  else

   {

     printf("\n elements in the stack are\n");

     for(i=top;i>0;--i)

     printf("|%d|\n",stack[i]);

   }

   return;

}



void main()

{

 int choice;

 clrscr;

 while(1)

 {

   printf("\n STACK OPERATIONS\n");

   printf("\n 1:push\t2:pop\t3:palindrome\t4:check\t5:display\t6:exit\n");

   printf("\enter your choice[1/2/3/4/5]:");

   scanf("%d",&chice);

   switch(choice)

   {

    case 1:push();break;

    case 2:pop();break;

    case 3:palindrome();break;

    case 4:check();break;

    case 5:display();break;

    case 6:exit(0);

    default:printf("invalid choice\n");

   }

  }

 return;

}

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