c++ calling link lists in main..serious help :/

[lolcheelol]

i understand the concept of linked lists and how they work, but i cannot seem to grasp how to convert random numbers in the main to. if anyone can help fix my code up that would be really helpful.

#include <iostream.h>
#include <fstream.h>
#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
#include <string.h>


typedef struct linknode{
    int data1;
    linknode *p;
} nodetype;

int startlist(nodetype *p1){
    int size1=0; int in1;

    nodetype *temp; 
    in1=random(1000);
    cout << "\n\tRandom Numbers:   ";
    cout << in1 << "  ";
    nodetype *firstone= new nodetype;
    firstone->data1=in1;
    p1=firstone;
    temp=firstone;

    for(;;){
    nodetype *new1 = new nodetype;
    (temp->p)=new1;
    temp=new1;
    
    in1=random(1000); 
    cout << in1 << "   ";
    new1->data1=in1;
     size1++;
    if(size1==10) break;
        }    
    temp->p=NULL;

return size1;
}

int addNode(nodetype *p1, int pos, int value){
    // if((pos>size) || (pos<1)) error return 1;    
    // else
    nodetype *n=new nodetype;
    n->data1=value;
    nodetype *temp=p1;

    if(pos==1){  n->p=p1; 
            p1=n;   }

      else{
    // for(int i=0; pos-2;) temp=temp->p;
    n->p = temp->p; temp->p=n;
    }
return 0;
}    
    
int listsize(linknode *p1){ 
    int size=0;
    for(;;){      
        if(p1==NULL) break;
        p1=p1->p;
        size++;
        }
    cout << "\n\n\tList size = " << size;

return size;}  

int printlist(linknode *p1, int size1){
    cout << "\n\n\tList Content(s):  ";
    for(int i=0;i<size1; i++){  
     cout << p1->data1 << "   ";
      p1=p1->p;
        }
return 0;}

int printall(linknode *p1){
    for(;;){
        if(p1==NULL) break;
        cout << p1->data1 << "   ";
        p1 = p1->p;
        }

return 0;
}

int main(){
   clrscr();
    linknode *start1;
    linknode *go;
    nodetype t1;
    start1=&t1;
    t1.data1=55;
    nodetype *t2;
    t2=new nodetype;
    t2->data1=66;
    t1.p=t2;
    t2->p=NULL;
    go=start1;

    startlist(go);
    addNode(go,10,5);
    listsize(go);
    printlist(go,2);
    cout << "\n\n\t";
    printall(go);

    delete t2;

   cout << "\n\tComplete";

       return 0;
} //MAIN

here is my entire source code for this program. its pretty messed up, but it works. i've been building from 1 program to the next. the original program was to just use t1 to print the integers and now i want to replace those few numbers with random numbers, or at least add them and use the function addnode, which would add another node in the program. i also don't know how to construct the for loop that i commented out. i need to have it -2 from the pos.

thanks alot in advance.