Solved

read a variable # of ints from the keyboard into array

Posted on 1998-06-12
6
169 Views
Last Modified: 2011-04-14
I'm looking for a sample program that does exactly this:  gets called from the command line to read in a variable number of integers which get stored into an array.  After whatever manipulation (sorting, adding, multiplying various parts of the array) the array will be displayed back on the screen and the program ends.  Usage should be:
  FeedMe 383 22 82 99 1 93 3 82
for any amount of ints up to 100.  I'd like sample code for FeedMe.cc and FeedMe.h, as well as a sample compile on gcc.
This should be really simple and hopefully someone has it lying around and can post it asap.  Thanks.
0
Comment
Question by:appleby
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
  • 2
6 Comments
 
LVL 32

Expert Comment

by:jhance
ID: 1165770
How about this....


0
 
LVL 11

Expert Comment

by:alexo
ID: 1165771
How about:

    #include <iostream.h>
    #include <stdlib.h>


    int Sum(int size, int* array)
    {
        int result = 0;
        for (int i = 0; i < size; ++i)
            result += array[i];

        return result;
    }


    int main(int argc, char* argv[])
    {
        if (argc < 2)
        {
            cout << "Usage: " << argv[0] << " <argument>..." << endl;
            return 1;
        }

        int i;

        int size = argc - 1;
        int* array = new int[size];
        for (i = 0; i < size; ++i)
            array[i] = atoi(argv[i + 1]);

        int result = Sum(size, array);

        cout << "Array: ";
        for (i = 0; i < size; ++i)
            cout << array[i];
        cout << endl;

        cout << "Result: " << result << endl;

        delete[] array;
        return 0;
    }

OK?
0
 
LVL 32

Expert Comment

by:jhance
ID: 1165772
Oops, here's the code:

#include <stdio.h>
#include <stdlib.h>

void main(int argc, char *argv[])
{
      // Make a place to store the ints
      if(argc < 2){
            fprintf(stderr, "Error, nothing specified\n");
            return;
      }

      int *Ints = new int[argc-1];
      for(int i=1; i<argc; i++){
            Ints[i-1] = atoi(argv[i]);
            printf("Argument #%d (%s) converted to %d\n", i-1, argv[i], Ints[i-1]);
      }
}
0
Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 

Author Comment

by:appleby
ID: 1165773
I was going to comment that I get segmentation fault, but since I see that both suggestions are the same, it makes me think I have a typo or something.  But I don't see one.  Have you both tested these?
0
 

Author Comment

by:appleby
ID: 1165774
Ok, I was just running an old file before fixing a typo.  Both are fine.  Thanks very much.  Alexo's answer did come through first (even if by mistake) and was more complete with the function example also.  I feel I should give him the grade.

0
 
LVL 11

Accepted Solution

by:
alexo earned 70 total points
ID: 1165775
Great minds think alike :-)
0

Featured Post

Announcing the Most Valuable Experts of 2016

MVEs are more concerned with the satisfaction of those they help than with the considerable points they can earn. They are the types of people you feel privileged to call colleagues. Join us in honoring this amazing group of Experts.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Templates For Beginners Or How To Encourage The Compiler To Work For You Introduction This tutorial is targeted at the reader who is, perhaps, familiar with the basics of C++ but would prefer a little slower introduction to the more ad…
Introduction This article is the first in a series of articles about the C/C++ Visual Studio Express debugger.  It provides a quick start guide in using the debugger. Part 2 focuses on additional topics in breakpoints.  Lastly, Part 3 focuses on th…
The viewer will learn how to pass data into a function in C++. This is one step further in using functions. Instead of only printing text onto the console, the function will be able to perform calculations with argumentents given by the user.
The viewer will be introduced to the member functions push_back and pop_back of the vector class. The video will teach the difference between the two as well as how to use each one along with its functionality.

734 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question