title: Joining strings in ibm CPLEX
body: <p>I'm quite new with ibm cplex and I am developing a program in which I need to join, e.g., concatenate two string variables. The code I'm trying to implement is:</p>
  <pre><code>string sheet=...;
  string rangename=sheet+&quot;edges&quot;
  </code></pre>
  <p>The problem is an error appears that says &quot;operator not available for string + string.</p>