How to insert an element in a vector of pair of set? vector>>

Question

    vector<pair<int,set<string>>>m1;

I am trying to insert an element where each int will hold several strings using set. How to insert an element in this?

I tried like this.

    vector<pair<int,set<string>>>m1;
    int p,n,i;
    cin>>p>>n;
    string s[n];
    for(i=0;i<n;i++){
    cin>>s[i];
    m1.push_back(make_pair(p,insert(s[i])));
    }

But it shows error. Help much appreciated. Thanks!!

Please post the error you get – Dorian Roy Jun 12 '18 at 10:31 — Dorian Roy, Jun 12 '18 at 10:31

score 0 · Answer 1 · answered Jun 12 '18 at 10:10

0

make_pair needs to take a key/value pair, so the set should already exist.

set<string> s;

for(i=0; i<n; i++){
    {
    string str;
    cin >> str;
    s.insert(str)
    }

m1.push_back(make_pair(p, s));

answered Jun 12 '18 at 10:10

acraig5075

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score 0 · Answer 2 · edited Jun 12 '18 at 10:30

0

Change

m1.push_back(make_pair(p,insert(s[i])));

to

m1.push_back(make_pair(p, set<string>{s[i]}));

The std::set must exist before you insert any element into it.

edited Jun 12 '18 at 10:30

Ron

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answered Jun 12 '18 at 10:11

KostasRim

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How to insert an element in a vector of pair of set? vector>>

2 Answers2