Thread: need help with this function

so I have tried a lot of different things to try to get these functions to work but have not been able to get them working together. The problem is to output armstrong numbers within a certain range selected by the user. please help

Code:

bool IsArmstrongNumber(int x)
//-----------------------------------------------------
{


    int NumberOfDigits(int x);
    int DthDigitOfX(int x,int d);
    int sum,d;
int n = NumberOfDigits(x);
    for(d=0;d<=n;d++)
    {
        x=n%10;
        sum+=DthDigitOfX(x,d);
        n=n/10;
    }

    if (x==sum)
    {
        return(true);
    }
    else
    {
        return(false);
    }





}

Code:

int DthDigitOfX(int x,int d)

Code:

//-----------------------------------------------------
{
/*
Precondition: (x >= 0)
Precondition: (1 <= d <= 10) 


d is interpreted as follows


    1
d = 0,987,654,321
x = X,XXX,XXX,XXX


For example, if x = 153, then
   d = 1 returns 3, 
   d = 2 returns 5,
   d = 3 returns 1, and
   d > 3 returns 0. 
*/