title: One command line argument in C
body: <p>write c program that accepts one command line argument (your first name) and prompts the user for user input (your last name), then print ""Welcome to operating systems,   "" to the screen. </p>
  
  <p>Can anyone help me with this question? I know its using something like this from the below,  but I dunno how to print out the thing? Can anyone help by giving the full answer? Thanks in advance. </p>
  
  <pre><code>int main (int argc, int *argv[])
  </code></pre>