title: Merge two strings with alternate chars as output
body: <p>I got the task to alternately combine the letters of two strings with the same length.</p>
  
  <p>For example:</p>
  
  <pre><code>Inputstring 1: "acegi"
  
  Inputstring 2: "bdfhj"
  
  Outputstring: "abcdefghij"
  </code></pre>
  
  <p>And I got the following Problem when I run my code. </p>
  
  <pre><code>Traceback (most recent call last):  
    File "...", line 14, in &lt;module&gt;
      x =x+f
  TypeError: must be str, not int
  </code></pre>
  
  <p>I think every relevant variable is a <code>String</code>.</p>
  
  <pre><code>s=str(input("Input first String:"))
  v=str(input("Input second String:"))
  x=""
  c=1
  z=""
  f=""
  laenge=len(s)
  lenge=len(v)
  
  for f in range(laenge):
  
      if f in range(c,c+1):
          x =x+f
  for z in range(lenge):
  
      if z in range(c,c+1):
          x=x+z
  c=c+1
  
  print(x)
  </code></pre>