Dont getting the approach

#1

how to store the values in forward list in the last(like insertion in the back) if we take data of forward list from the user. i tried but getting error. please help.

#include<bits/stdc++.h>
using namespace std;

int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);

int a,n,i,k=0;
cin>>n;
forward_list<int>l;
for(i=0;i<5;i++)
{
    cin>>a;
    if(i==0)
    {
        l.push_front(a);
    }

    else 
    {
        l.insert_after(l.begin()+k,a);
        k++;
    }

}

for(auto&it:l)
cout<<it<<"->";

return 0;

}

#2

@shivamgoel150 i have updated this in your code look at this you will understand https://ide.codingblocks.com/s/263388

#3

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#4

can you please explain the purpose and function of line 12 of code that is (auto k=l.before_begin():wink:

#5

Return iterator to before beginning

Returns an iterator pointing to the position before the first element in the container.

#6

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#7

https://ide.codingblocks.com/s/263388 in this what does the l.before_begin() do

#8

hi @shivamgoel150
It returns an iterator which points to the position before the first element of the forward_list.