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#include 

/*

** Get command line argument.

** Entry: n    = Number of the argument.

**        s    = Destination string pointer.

**        size = Size of destination string.

**        argc = Argument count from main().

**        argv = Argument vector(s) from main().

** Returns number of characters moved on success,

** else EOF.

*/

getarg(n,s,size,argc,argv)

 int n; char *s; int size,argc,argv[];

{char *str;

 int i;

 if(n<0 | n>=argc)

 {*s=NULL;

  return EOF;

 }

 i=0;

 str=argv[n];

 while(i

 {if((s[i]=str[i])==NULL) break;

  ++i;

 }

 s[i]=NULL;

 return i;

}