ive been at this for a while now trying to understand the logic of adding an item to the top/beginning of a linked list.
dummy is set to null in the constructor. now, in a previous thread, i got the concept of whats going on here. dummy points to the newest link and when the program outputs the display() it basically has the 'LIFO' output just like a stack. what i want is for it to be 'FIFO' (first in-first out). im not asking for code to fix this, just a hint in the right direction. thanks in advance.Code:////////////////////////////////////////// struct link //one element of list { int data; //data item link* next; // pointer to the next link }; //////////////////////////////////////////// void linklist::additem(int d) //add item { link* newlink = new link; //make a new link newlink->data = d; //give it data newlink->next = dummy; //it points to the next link dummy = newlink; //now dummy points to this } void linklist::display() //display all links { link* current = dummy; //set ptr to dummy link while( current != NULL ) //quit on last link { cout << current->data << endl; //print data current = current->next; //move to next link } }
edit:
the exercise in my book says to only revise the additem().
