right so, if i am reading in a binary file and want to flip all the bytes that are read in, and the bytes read are 4096... how do i flip all the bits...????

i have the following function:


void ReadFile( void *buffer)
{
fread(buffer,4096,1,infile);

// this doesnt work:
binary_flip(&buffer, sizeof(buffer));


}

if i use the "binary_flip" code from one of the answers above, it still doesnt fip everything.

What i need to do if flip all the bytes currently held in "buffer" once it is read in using 4096 bytes.

i have been told that by doing "*(unsigned int *)buffer = ~(*(unsigned int*)buffer);" this is only flipping 1 DWORD.... so how do i flip it all?

thanks

Paul.

great thanks, it works!!