set manipulation 0

As part of my assignment I have to create an array of ints based on user input. lets say that the user types in the following command:

Code:

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> create 3 5 6 1 8

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I have to make an array with those ints in it and of precisely that size. The way my program is set up is that I input the comman word into a string, compare it, and then depending on what it is do further things (look at code below). After that I have to parse the next input taking out the ints seperated by whitespace...I think you know what I mean.

I really don't want to use strtok(), but it looks like I will have to, any other ideas?

Code:

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void getCommand()
{
        int firstVal = 0;        //these will hold the values following each command
        int secondVal = 0;        //except create, setids, and quit
        Sets object;
        string command;                //holds the first word of the user inputed command
        string set;
       
        cout << ">  ";
        cin >> command;

        //create a set
        if( command == "create" )
        {
                cout << endl << command;
                //problem lies here
        }
        //destroy set
        else if( command == "destroy" )
        {
                cin >> firstVal;
                object.set( firstVal );
        }               
........... and so on for other set manipulating functions

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thanks

You could get the entire line into a string, then construct an istringstream object to use.

Code:

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#include <iostream>
#include <sstream>
#include <strstream>
using namespace std;

int main()
{
    istringstream in("1 2 3 4 5 6 7 8 9");

    int i;
    while(in.good())
    {
        in >> i;
        cout << i << " ";
    }//while

    return 0;
}//main

---

gg

thanks codeplug, I'm not familiar with those libraries but I'll try looking them up because your solution looks much nicer then mine.... I ended up using strtok() for now until I think of something else, and I also ended up writting partially in C....why is it that some stuff is so much easier in C????? anyways here is what I did:

Code:

---

void getCommand()
{
        int firstVal = 0;        //these will hold the values following each command
        int secondVal = 0;        //except create, setids, and quit
        int x, i=0;                        //simple counter
        char buff[256];                //buffer for creation of a set
        char *p;

        Sets object;               
        string command;                //holds the first word of the user inputed command
        string set;
       
        cout << ">  ";
        cin >> command;

        //create a set
        if( command == "create" )
        {
                cout << endl << command;
               
                gets( buff );
                p = strtok( buff, " " );

                while( p != NULL )
                {
                        if( sscanf( p, "%d", &x ) )
                                cout << p;
                        else
                                printf( "error on token %d: integer expected" );

                        i++;
                        p = strtok( NULL, " " );
                }
        }

---

any other suggestions are more then welcome!

edit:: the above code is partially made for debugging; the actual int is sent to an array in the program

codeplug I've run your code, and you either misuderstood what I ment or there is something wrong with the code itself.

When I (user) input any set of ints, it still prints out 1,2,.....9

can you explain the consept of your code for me a bit?

Another way

Code:

---

#include <iostream>
#include <vector>

int main(void)
{
  std::vector<int> myArray;
  std::string command;
  int i;
 
  std::cin >> command;
  std::cout <<"Running command: " <<command <<std::endl;
  while (std::cin >> i && i != -1)
  {
    myArray.push_back(i);
  }

  for (std::vector<int>::iterator it = myArray.begin(); it != myArray.end(); ++it )
  {
    std::cout <<*it <<" ";
  }
 
  std::cout <<std::endl;
 
  return(0);
}


/*
My input/output:

blahblah 1 2 3 4 5 -1
Running command: blahblah
1 2 3 4 5

*/

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With the stringstreams, you have to read the input in a string first, then pass that string to a stringstream. This might help (loosely!)
http://faq.cprogramming.com/cgi-bin/...&id=1043284385

Thanks Hammer, I've also seldom worked with vectors but they are much more familiar to me then what codeplug showed. Anyways, is there a way of setting the limit to the while loop to be a return (newline) rather then a '-1'?