Thread: creating new objects in loop

  1. #1
    Registered User
    Join Date
    Apr 2004

    creating new objects in loop

    I'm trying to figure out how to create new objects based on user input. Here is a sample output to help my description:

    Enter value for object: 4 // this would set a value for object1 as 4
    Do you want to enter another? yes
    Enter value for object: 3 // this would set a value for object2 as 3

    Here is what I have without any logic for creating the new object in the loop (this program just overwrites the "object" object in each loop instead of making object1, object2, object3 etc...:

    Thanks for your time
    Hail to the Redskins.

    #include <iostream> 
    using namespace std; 
    class CRecord
    	CRecord();		//default constructor
    	int getnum();	//get function
    	int num;
    CRecord::CRecord() //default constructor
    int CRecord::getnum() // a get utility function
    	return num;
    int main()
    	int counter =1;
    	while ( counter <= 5 ) {
    		CRecord object;
    		cout << "enter value for object: " ;
    		cin >> object.num;
    		cout << endl << object.getnum() << endl;
    	return 0;

  2. #2
    Senior Member joshdick's Avatar
    Join Date
    Nov 2002
    Phildelphia, PA
    Don't make data members public within a class. Make them private (or protected) and then overload the input operator.

    "The computer programmer is a creator of universes for which he alone is responsible. Universes of virtually unlimited complexity can be created in the form of computer programs." -- Joseph Weizenbaum.

    "If you cannot grok the overall structure of a program while taking a shower, you are not ready to code it." -- Richard Pattis.

  3. #3
    Registered User jlou's Avatar
    Join Date
    Jul 2003
    If you want different objects, you must keep track of the different objects. In your example, you only create one object at a time. Technically speaking, you create 5 objects, but each one goes away before you create the next one.

    One solution is a vector or array of CRecord objects. In your code example you would make it a size of 5 and create it before your loop. Then, use the counter variable to index the array and set the values appropriately. Be careful, though, because you start counter at 1 and arrays are indexed from 0 to size-1.

  4. #4
    Registered User
    Join Date
    Apr 2004


    Thanks guys, - I think I see the light. I'll try the array of objects and reply again if I have more questions.

    I kept everything public because I was trying to make keep my example code simple.

    Thanks so much for your time.

Popular pages Recent additions subscribe to a feed

Similar Threads

  1. trouble with creating a loop to read certain number of inputs
    By import tuner650 in forum C++ Programming
    Replies: 2
    Last Post: 03-20-2008, 07:28 PM
  2. Creating pthreads in for loop
    By 0624167 in forum Linux Programming
    Replies: 4
    Last Post: 02-13-2008, 12:10 PM
  3. return to start coding?
    By talnoy in forum C++ Programming
    Replies: 1
    Last Post: 01-26-2006, 03:48 AM
  4. loop needed also how to make input use letters
    By LoRdHSV1991 in forum C Programming
    Replies: 3
    Last Post: 01-13-2006, 05:39 AM
  5. when a while loop will stop ?
    By blue_gene in forum C Programming
    Replies: 13
    Last Post: 04-20-2004, 03:45 PM