Mathematics 1201: Programming in C
		Reading and Homework Assignment #1
			Prof. Wickerhauser

			Due 1 September 1999


You are encouraged to collaborate on homework, and to work additional
exercises from the indicated problem sections, although the homework grade
will be based only on the exercises listed below.  Please return your
solutions to me by the end of class.  LATE HOMEWORK WILL NOT BE ACCEPTED.


Read the Preface and Chapter 1 of the textbook.

Do Exercises 2, 3, and 5 of Chapter 1.

[Exercise 2, p.16]  When you run the following program, it should echo
back the command line arguments, each on a separate line.  Check that
it works on your system.
	#include <stdio.h>
	main( int argc, char **argv )
	{
	  while( --argc )
	    puts( *++argv );
	}

[Exercise 3, p.16] The following program copies from the standard
input to the standard output.  Use redirection to copy from one file
to another file.  What happens if the output and input files are the
same?
	#include <stdio.h>
	main(void)
	{
	  int Ch;
	  while( ( Ch = getchar( ) ) != EOF )
	    putchar( Ch );
	  return 0;
	}

[Exercise 5, p.17] Write a program to compute X to the Nth power for
nonnegative integers N.  Assume that X to the 0th power is 1.


Extra Problems:

1. Write, compile and execute the following computer program:

    #include <stdio.h>
    main( void )
    {
      int i;
      for( i=10; i>0; i-- )
	printf( "%d...", i );
      printf( "blastoff!\n" );
      return(0);
    }

Figure out how to print the output of this program.  Suggestion: redirect it
to a file named ``boom'' and print that.


2. What does the following program do?

    #include <stdio.h>
    main( int argc, char **argv )
    {
      int i;
      if( argc<2 ) return(1);
      i = 0;
      while( argv[1][i] ) ++i;
      while( i ) putchar( argv[1][--i] );
      putchar('\n');
      return(0);
    }

How should it be called to print out the message ``Hello''?  Bonus: can
you get this program to print the message ``Hi there''?  how about ``Hi
there!''?.