CODING: #include<stdio.h> #include<conio.h> #define max 50 int q[max],front=-1,rear=-1; void push(); void pop(); void peep(); void display(); void main() { int ch; clrscr(); do { printf("\nS E L E C T C H O I C E"); printf("\n1.Insert Element."); printf("\n2.Delete Element."); printf("\n3.Peek."); printf("\n4.Display Element."); printf("\n5.Exit"); printf("\nEnter the choice:"); scanf("%d",&ch); switch(ch) { case 1: push(); break; case 2: pop(); break; case 3: peep(); break; case 4: display(); break; case 5: return; default: printf("TRY AGAIN."); break; } }while(ch!=5); getch(); } void push() { int num; printf("Enter the Number:"); scanf("%d",&num); if(rear==max-1) printf("Queue id overflow."); if(rear==-1 && front==-1) front=rear=0; else rear++; q[rear]=num; printf(...
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