C / C++ C: Little To Big Endian

[Nobody 8]

I need to read a binary file in it's proper format, and that includes Big endianess, in which my CPU is intel. Here is what I came up with, but it has an error claiming that bigEndian is violating memory access.

DWORD ReverseInt(DWORD val)
{
    int i = 0;
    char bigEndian[0x4];
    char littleEndian[0x4];
    sprintf(littleEndian, "%d", val);
    for (i < sizeof(littleEndian); i++; )
    {
        bigEndian[i] = littleEndian[sizeof(littleEndian) - i];
    }
    return (DWORD)bigEndian;
}

[AMD 885]

Use compiler intrinsics instead (assuming that your compiler supports them). See the answer to this question: http://stackoverflow.com/questions/105252/how-do-i-convert-between-big-endian-and-little-endian-values-in-c

If your compiler doesn't support those, this function should do the trick:

DWORD byteSwap(DWORD val)
{
    return (val << 24) | ((val & 0xFF00) << 8) | ((val >> 8) & 0xFF00) | (val >> 24);
}