why this error

pradeep5592 · 06-18-2015, 12:47 AM

int del()
{
int element;
if(front==-1 || front=rear+1)
{

printf("queue is empty\n");
return;
}
element =queue[front];
front=front+1;
printf("%d has been deleted", element);
return element;
}

error ---> function ‘del’:
error: lvalue required as left operand of assignment

pan64 · 06-18-2015, 12:55 AM

probably because you used assignment operator instead of comparator:
if(front==-1 || front==rear+1)
otherwise the information you gave is not enough to be sure

pradeep5592 · 06-18-2015, 12:59 AM

Thanks a lot that was the only error.