Checksum calculating program

[Protoman]

How would I make a program to calculate a checksum? I have the code to
sum up the digits, but what then? Here's the digit summer:

template <unsigned int I>
int SumDigits()
{
return(I%10)+(SumDigits<I/10>());
}

template <>
int SumDigits<0>() {return 0;}

Some help? Thanks!!!!

 

[Victor Bazarov]

How would I make a program to calculate a checksum? I have the code to
sum up the digits, but what then? Here's the digit summer:

template <unsigned int I>
int SumDigits()
{
return(I%10)+(SumDigits<I/10>());
}

template <>
int SumDigits<0>() {return 0;}

Some help? Thanks!!!!

What checksum algorithm do you want to employ? There are many. Have
you tried looking for their descriptions and implementations on Google?

V

 

[Protoman]

What checksum algorithm do you want to employ? There are many. Have
you tried looking for their descriptions and implementations on Google?

V

The alg they use for UPC barcodes.

 

[Victor Bazarov]

The alg they use for UPC barcodes.

I don't see it defined in the C++ Standard document.