[dcbrown]

printf can be passed a variable number of arguments. The passed arguments are saved onto the stack and end up just a long list of bytes - no delimiters. The format statement is parsed to determine the number and size of the passed arguments. So, if measurement is a long - 4 bytes are passed because the caller knows its data type. But if the format statement says %d - print out an int - then the only the first two bytes are pulled from the list of argument bytes. The next %d will then print out the last two bytes of measurement, etc. In C, this is a varargs routine.