title: how to add a int to a char[] in c/c++
body: <p>i have a code like this:</p>
  
  <pre><code>int i = 123;
  char myString[100];
  strcpy(myString, "my text");
  </code></pre>
  
  <p>and how i want to add the 123 after "my text". how to do this in c/c++?</p>
  
  <p>at the end <code>myString</code> sould be <code>my test123</code></p>