title: Using sprintf to print string value
body: <p>Actually, I get this problem in Gnuplot. But in a simple way, the problem is I want to use sprintf to print in string format, even though the string consists of numbers and symbol. Like this:</p>
  
  <pre><code>a = '12/7'
  
  sprintf('%.f', a)
  </code></pre>
  
  <p>I am able to run it in Gnuplot, but it only shows numbers before symbol "/". I expect the output should print all the content of variable <code>a</code> which is '12/7'. Any suggestion for this case?</p>