int main()
{
int choice;
while(1)
{
printf("\nChoose an option \n1. Add Element \n2. Delete Element \n3. View Queue \n4. Exit \n");
printf("Enter your choice: ");
scanf("%d", &choice); // get choice from user
if(choice==1)
{
addQueue(); // if choice 1 then call addQueue function
}
else if(choice==2)
{
deleteQueue(); // if choice 2 then call deleteQueue function
}
else if(choice==3)
{
viewQueue(); // if choice 3 then call viewQueue function
}
else if(choice==4)
{
return 0; // if choice 4 then exit
}
else
{
printf("\nEnter valid choice \n"); // invalid choice
}
}
}
int main()
{
int choice,cap,data;
printf("1. create Queue(a queue is required before any other operation to be done on the queue\n");
printf("2. insert an element in the queue Queue\n");
printf("3. delete an element from the Queue\n");
printf("4. delete the whole Queue\n");
printf("5. view Queue\n");
printf("6. exit\n");
while(1)
{
printf("\nEnter your choice : ");
fflush(stdin);
scanf("%d",&choice);
switch(choice)
{
case 1:
printf("\nEnter the capacity of the Queue : ");
scanf("%d",&cap);
if(createQueue(cap)!=NULL)
printf("\nQueue has been created successfully");
break;
case 2:
printf("\nEnter the data to be inserted : ");
scanf("%d",&data);
enQueue(createQueue(cap),data);
break;
case 3:
deQueue(createQueue(cap));
break;
case 4:
deleteQueue(createQueue(cap));
break;
case 5:
viewQueue(createQueue(cap));
break;
case 6:
exit(0);
default:
printf("\nInvalid choice");
}
}
return 0;
}