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c++erase

Can not I increase iter2 after erase the object iter2 pointed out previously?

the runtime error happens at the below line. Could you explain why the error happens? Can not I increase iter2 after erase the object iter2 pointed out previously? iter2++; //// error happened

Best regards,

#include<iostream>
#include<vector>
using namespace std;

int main(void) {

    vector <string> v;

    v.push_back("aaaa");
    v.push_back("bbbb");
    v.push_back("cccc");
    v.push_back("dddd");
    v.push_back("eeee");
    v.push_back("ffff");

    vector<string>::iterator iter2;

    iter2 = v.begin() + 2; 
    v.erase(iter2);
    iter2++;  ////  error happened  

    for (iter2 = v.begin(); iter2 != v.end(); iter2++) {
        cout << *iter2 << " ";
    }

}
Solution

  • Erase function has return value - iterator pointing to the next object in the container. So just use it like this:

    iter2=erase(iter2);

    Now you can increment it all you want.