title: no suitable conversion from "std::string" to "char" exists
body: <p>I'm working on a project for school and I am running into a bit of a problem (error is in the title). </p>
  
  <p>Here is the line of code that runs into the error:</p>
  
  <pre><code>kruskalS[n].nodeList[m].push_back(tempFirstCity);
  </code></pre>
  
  <p><code>kruskalS</code> is a struct and <code>nodeList</code> is a vector of type <code>string</code> within the struct and I'm trying to insert <code>tempFirstCity</code> (also a <code>string</code>) into that array. </p>
  
  <p>I could easily be making a basic mistake since I haven't done any programming since April. Any kind of help would be appreciated and I'm willing to post a bit more information from the program if needed.</p>