Quote:Original post by REspawn
I tried the bit shifts with the end result always being 0.

unsigned long result = rawHeader[4] << 24 + rawHeader[5] << 16 + rawHeader[6] << 8 + rawHeader[7];

this should now hold the number 3, any ideas what I'm doing wrong?

unsigned long result = 0;for (int i = 4; i > 0; i++) {	result <<= 8;	result += rawHeader[i-1];}

Quote:Original post by DevFred

Quote:Original post by swiftcoder
You are shifting 8-bit numbers

No. The general rule is that everything smaller than an int is promoted to an int before the actual operation.

int main(void){    unsigned char b = 123;    printf("%d\n%d\n", sizeof b, sizeof (b+b));    return 0;}

This prints 1 for sizeof b and 4 for sizeof (b+b).