Q. i have aplication, which i made in c++ and now want to atach to web site which ill make in php. can any1 help and give tips how to make it?
A. Well, assuming it's a command line program, you can just call it as a CGI program. Setting up CGI access is different in Linux/Apache than it is in Windows/IIS.
Need help with a Unix program?
Q. I need help in writing a unix program for a homework assignment. All I have is this:
#!/bin/Bash
echo "Enter the two numbers to be added:"
read n1
read n2
answer=$(($n1+$n2))
echo $answer
I tried it out and it didn't work as planned. Can I get a little help as to what I'm doing wrong?
The actual assignment is below:
Write a bash program to implement an interactive adding machine. The program
should input 2 or more integers from Standard Input (keyboard) and output the
sum of those integers to Standard Output (display). It is not necessary to
check for invalid (non-integer) inputs. The program should terminate due to
user input.
Be sure your program includes all of the following:comments with your name, the date, and the assignment
comments or output with instructions for using the program
prompts for all inputs
labels for all outputs
descriptive names and/or comments explaining variables & functions
indentation of code blocks
comments explaining any non-obvious control flow
#!/bin/Bash
echo "Enter the two numbers to be added:"
read n1
read n2
answer=$(($n1+$n2))
echo $answer
I tried it out and it didn't work as planned. Can I get a little help as to what I'm doing wrong?
The actual assignment is below:
Write a bash program to implement an interactive adding machine. The program
should input 2 or more integers from Standard Input (keyboard) and output the
sum of those integers to Standard Output (display). It is not necessary to
check for invalid (non-integer) inputs. The program should terminate due to
user input.
Be sure your program includes all of the following:comments with your name, the date, and the assignment
comments or output with instructions for using the program
prompts for all inputs
labels for all outputs
descriptive names and/or comments explaining variables & functions
indentation of code blocks
comments explaining any non-obvious control flow
A. If you're going to be working in IT the very first thing you need to learn is how to explain a problem accurately and completely.
- What happened (or didn't happen) for you to say, "it didn't work as planned"?
- How did you try it out? (*Exactly* what commands did you type? What, if anything, did the system say in response to those commands?)
Now, from a superficial review of the code, the first problem is on the first line. You should have received an error such as this:
$ /tmp/homework
bash: /tmp/homework: /bin/Bash: bad interpreter: No such file or directory
$
This is a hint that the system cannot find "/bin/Bash", and indeed if you review that carefully you'll find that you should have typed "/bin/bash". Unix (and Linux-based) systems are case-sensitive.
Other than that, the problem fundamentally does what you need. You'll have to add all the fancy bits, though, such as comments.
- What happened (or didn't happen) for you to say, "it didn't work as planned"?
- How did you try it out? (*Exactly* what commands did you type? What, if anything, did the system say in response to those commands?)
Now, from a superficial review of the code, the first problem is on the first line. You should have received an error such as this:
$ /tmp/homework
bash: /tmp/homework: /bin/Bash: bad interpreter: No such file or directory
$
This is a hint that the system cannot find "/bin/Bash", and indeed if you review that carefully you'll find that you should have typed "/bin/bash". Unix (and Linux-based) systems are case-sensitive.
Other than that, the problem fundamentally does what you need. You'll have to add all the fancy bits, though, such as comments.
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