Getting the same answer, when the program restarts

This is a discussion on Getting the same answer, when the program restarts within the C# Programming forums, part of the General Programming Boards category; Well i've made a program that asks the decimal number, and puts it in a numberStelsel. BUt my problem is ...

  1. #1
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    Join Date
    May 2008
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    1

    Getting the same answer, when the program restarts

    Well i've made a program that asks the decimal number, and puts it in a numberStelsel.
    BUt my problem is that it doenst work properly.
    for example
    Decimal number = 16
    Numberstelsel= 8
    I get: 20

    This is correct
    After i push de Y, to let the program start again.
    I insert
    Decimal number = 15
    Numberstelsel= 5
    I get: 20

    This is the wrong number + its the same answer of the one before this.
    Can someone help me with this one?

    Code:
    #include <stdio.h>
    #include <conio.h>
    
    /* definition of functions: */
    int Input(void);
    void DecimalToBinary(double *);
    void Output(double);
    
    /* variables declare*/
    int nDecimal = -1, nStelsel;
    double dRem , dPow_10 = 1, dBinary;
    char chAgain = 'y';
    
    int main()
    {
    while(chAgain=='y')
    	{
    		nDecimal = Input();
       	printf("\nVoer het getalstel in:\n");
    		scanf("%d",&nStelsel);
    		while(nStelsel < 2 || nStelsel >= 10)
    		{
    			printf("Voer een getalstelsel tussen de 1 en de 10:");
    			scanf("%d", &nStelsel);
    		}
    		DecimalToBinary(&dBinary);
    		Output(dBinary);
    		printf("Do you want to run this program again? [y/n]: ");
       	chAgain = getch();
    	}
    
    
    	/* exit program */
    	return 0;
    }
    
    int Input(void)
    /****************************************************|
    |Function: Hier word het decimale getal gekozen.     |
    |Argument: geen                                      |
    |return:   nDecimal                                  |
    \****************************************************/
    {
    
    	while((nDecimal < 0) || (nDecimal > 1023))
    	{
          printf("Dit programma rekent een decimaal getal om naar een getal \nin de door uw ingevoerde getalstelsel\n");
    		printf("Your decimal number (0 .. 1023): ");
    		scanf("%d",&nDecimal);
    	}
    return nDecimal;
    }
    
    void Output(double dBinary)
    /*******************************************|
    |Function: Print de waarde uit              |
    |Argument: dBinary                           |
    |Return: geen                                 |
    \*******************************************/
    
    {
    	printf("The value is: %10.0lf\n",dBinary);
    }
    
    void DecimalToBinary(double *pBinary)
    /*********************************************\
    |Function: Rekent het om in het getalstelsel  |
    |Argument: nDecimal                            |
    |Return:   dBinary                              |
    \*********************************************   */       
    {
    	while(nDecimal != 0)
    	{
    		dRem = nDecimal % nStelsel;
    		nDecimal = nDecimal / nStelsel;
    		*pBinary = dBinary + (dRem * dPow_10);
    		dPow_10 = dPow_10 * 10;
    	}
    }

  2. #2
    Confused Magos's Avatar
    Join Date
    Sep 2001
    Location
    Sweden
    Posts
    3,145
    Well, once your Input function retrieves a valid input it will keep returning that one. Look closer on this function.
    Oh, and this is a C# forum, not C++.
    MagosX.com

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