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From: wille@frith.uucp (Jeffrey Wille)
Newsgroups: comp.sys.amiga
Subject: Re: Compairing C values
Message-ID: <1991Feb5.173521.10273@msuinfo.cl.msu.edu>
Date: 5 Feb 91 17:35:21 GMT
Article-I.D.: msuinfo.1991Feb5.173521.10273
References: <rat.3380@hotcity.UUCP>
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Organization: Michigan State University, College of Engineering
Lines: 26


Three things: First, argv[i] is a pointer to a char, not a char.  So, you should
be looking at *argv[i].  Second, you are using the assignment operator '=' in
your 'if' statement, not the comparison one '=='.  When you say,  if (a = 0) 
the value of the statement is the value being assigned, i.e., zero.  Third,
the CLI uses + at the end of a command to signify that it is a continuation,
so 'test +' is going to wait for you to type more stuff, and the '+' will
be absorbed.  Try:


#include "workbench/startup.h"

main(int argc, char *argv[]) {
   int a;
   if ((a = *argv[1]) == '&')
     printf("Yes it's an '&'\n");
}

Hope that helps.
  _ _   ---------------------------------------------------------------------- 
 (   )                                     Jeff Wille (wille@frith.egr.msu.edu)
  (   )      _(_      ^^^^   _^-^_           [KF8HZ]  (wille@happy.egr.msu.edu)
   (   )    (   )    /   /   \   /  _^^_   
    ( @@)    00 M    @ @/    <@@ >  >oo<     "Never say anything unless you're
     (_^>   (^)/    ( ^ )     o /    @        sure everyone feels exactly the 
    Marge   Homer    Bart    Lisa  Maggie     same way." -- Homer Simpson