Can We Replace value of vector element using Iterator?

Question

How Iterators actually work in vectors.If we need to replace a data element in vector, can we proceed through iterator or do we need some other kind of implementation to do so?

Following is my code for above Query

#include <bits/stdc++.h>
using namespace std;
vector <string> v;
vector <string> :: iterator it;
int main()
{
    int t,l,i;
    cin >> t;
    for(i=0;i<t;i++){
        string s;
        cin >> s;
        v.push_back(s);
    }
    string s2="replaceable String";
    //Now I want to change some string at index i in vector v to string s2
    for(it=v.begin();it!=v.end();it++){
        cout << *it << endl;
    }
    return 0;
}

Answer 1

Iterators are used to point to slots or locations in vectors.

The iterators of a std::vector follow the concept of Random Interators .

You can assign an iterator to the beginning of a vector.

You can assign an iterator to the result of std::find .

You can increment an iterator.

You can access the element in an array by dereferencing the interator.

What else do you need?