Menu driven program that implements singly linked list for the following operations?

Answer 1

#include<stdio.h>

int a[10],i=(-1),st=(-1);

void push();

void pop();

void isfull();

void isnull();

void display();

main()

{

int st=(-1);

int a[10],n,ch,i=(-1);

char choice='Y';

while(choice=='Y' choice=='y')

{

printf(" 1.PUSH\n 2.POP\n 3.IS FULL\n 4.IS NULL\n 5.DISPLAY\n");

printf("Enter your choice :");

scanf("%d",&ch);

switch(ch)

{

case 1:

push();

break;

case 2:

pop();

break;

case 3:

isfull();

break;

case 4:

isnull();

break;

case 5:display();

break;

default:

printf("you have entered a wrong entry.");

}

printf("Do you want to continue?");

scanf(" %c",&choice);

}

}

void push()

{

if(st==(-1))

printf("The stack is empty.");

i=i+1;

if(i>=10)

printf("The stack is full.");

else

{

printf("Enter a number :");

scanf("%d",&a[i]);

st=st+1;

}

}

void pop()

{

if(st==(-1))

printf("The stack is empty. UNDERFLOW condition");

if(st>(-1))

{

printf("The deleted element is :%d",a[i]);

i=i-1;

st=st-1;

}

}

void isfull()

{

if(st<9)

printf("The stack is not full\n");

if(st>=9)

printf("The stack is full");

}

void isnull()

{

if(st==(-1))

printf("The stack is empty");

if(st>(-1))

printf("The stack is not empty");

}

void display()

{

int z;

if (st==(-1))

printf("The stack is empty.");

else

printf("The elements present in the array are :");

for(z=0;z<=i;z++)

printf(" %d",a[z]);

printf("\n");

}