How do I print bytes as hexadecimal?

Question

I know in C# you can use String.Format method. But how do you do this in C++? Is there a function that allows me to convert a byte to a Hex?? Just need to convert a 8 byte long data to Hex, how do I do that?

Answer 1

Well you can convert one byte (unsigned char) at a time into a array like so

char buffer [17];
buffer[16] = 0;
for(j = 0; j < 8; j++)
    sprintf(&buffer[2*j], "%02X", data[j]);