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Homework and Emergencies Homework & Coursework Questions Using While and If statements Post 302487451 by methyl on Wednesday 12th of January 2011 01:46:14 PM

Old

01-12-2011

Registered User

I don't write pure bash and I don't think we have seen your code to populate the array. Might be worth posting that script.
Remember that array elements are numbered from zero. In your case zero to six (i.e. seven elements).
Here's a bit of test code to get you started on how to walk the array and how to refer to the elements in shell script. You will need to change variable names to match the rest of your script and maybe change "echo" to "printf" depending on what you have been taught.

The idea is to build your script in simple stages and test each stage.
Once you can read back you array of the seven numbers the user typed you are in a position to insert code to do more (like find the highest value). Finding the median will be interesting.

Code:

echo "Read back test array in the same order it was created"
counter=0
counter_max=6
while [ ${counter} -le ${counter_max} ]
do
        echo "Array element ${counter} = ${num_array[${counter}]}"
        counter=$((counter+1))
done

methyl

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LEARN ABOUT DEBIAN

ppi::statement::compound

PPI::Statement::Compound(3pm)				User Contributed Perl Documentation			     PPI::Statement::Compound(3pm)

NAME

       PPI::Statement::Compound - Describes all compound statements

SYNOPSIS

	 # A compound if statement
	 if ( foo ) {
	     bar();
	 } else {
	     baz();
	 }

	 # A compound loop statement
	 foreach ( @list ) {
	     bar($_);
	 }

INHERITANCE

	 PPI::Statement::Compound
	 isa PPI::Statement
	     isa PPI::Node
		 isa PPI::Element

DESCRIPTION

       "PPI::Statement::Compound" objects are used to describe all current forms of compound statements, as described in perlsyn.

       This covers blocks using "if", "unless", "for", "foreach", "while", and "continue". Please note this does not cover "simple" statements
       with trailing conditions. Please note also that "do" is also not part of a compound statement.

	 # This is NOT a compound statement
	 my $foo = 1 if $condition;

	 # This is also not a compound statement
	 do { ... } until $condition;

METHODS

       "PPI::Statement::Compound" has a number of methods in addition to the standard PPI::Statement, PPI::Node and PPI::Element methods.

   type
       The "type" method returns the syntactic type of the compound statement.

       There are four basic compound statement types.

       The 'if' type includes all variations of the if and unless statements, including any 'elsif' or 'else' parts of the compound statement.

       The 'while' type describes the standard while and until statements, but again does not describes simple statements with a trailing while.

       The 'for' type covers the C-style for loops, regardless of whether they were declared using 'for' or 'foreach'.

       The 'foreach' type covers loops that iterate over collections, regardless of whether they were declared using 'for' or 'foreach'.

       All of the compounds are a variation on one of these four.

       Returns the simple string 'if', 'for', 'foreach' or 'while', or "undef" if the type cannot be determined.

TO DO

       - Write unit tests for this package

SUPPORT

       See the support section in the main module.

AUTHOR

       Adam Kennedy <adamk@cpan.org>

COPYRIGHT

       Copyright 2001 - 2011 Adam Kennedy.

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

       The full text of the license can be found in the LICENSE file included with this module.

perl v5.10.1							    2011-02-26					     PPI::Statement::Compound(3pm)