void menu();   int main() { int data[100], n, ch,c, fr = 0, re=0;   printf("Enter stack size: "); scanf("%d",&n);   menu(); printf("Enter choice: "); scanf("%d",&ch);   while(ch != 0) { if(ch == 1) { if(c == n) { printf("Queue full\n\n"); } else { printf("enter data: "); scanf("%d",&data[re]); re = (re+1)%n;

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Question

#include<stdio.h>

 

void menu();

 

int main()

{

int data[100], n, ch,c, fr = 0, re=0;

 

printf("Enter stack size: ");

scanf("%d",&n);

 

menu();

printf("Enter choice: ");

scanf("%d",&ch);

 

while(ch != 0)

{

if(ch == 1)

{

if(c == n)

{

printf("Queue full\n\n");

}

else

{

printf("enter data: ");

scanf("%d",&data[re]);

re = (re+1)%n;

c++;

}

}

else if(ch == 2)

{

if(c == 0)

{

printf("stack empty\n\n");

}

else

{

printf("%d dequeued\n\n",data[fr]);

fr = (fr+1)%n;

c--;

}

}

else if(ch == 3)

{

if(c>0)

{

printf(" front value : %d\n\n",data[fr]);

}

else

{

printf("stack empty\n\n");

}

}

else if(ch == 4)

{

printf("stack size: %d\n\n",c);

}

else

{

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

}

menu();

printf("Enter choice: ");

scanf("%d",&ch);

}

}

void menu()

{

printf("1. Enqueue\n");

printf("2. Dequeue\n");

printf("3. Top Value\n");

printf("4. Stack Size\n");

printf("0. Exit\n");

}
inplement stack using queue

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