I'm very new to dealing with bits and have got stuck on the following warning when compiling:

 7: warning: left shift count >= width of type

My line 7 looks like this

unsigned long int x = 1 << 32;

This would make sense if the size of long on my system was 32 bits. However, sizeof(long) returns 8 and CHAR_BIT is defined as 8 suggesting that long should be 8x8 = 64 bits long.

What am I missing here? Are sizeof and CHAR_BIT inaccurate or have I misunderstood something fundamental?

c bit-manipulation long-integer bit-shift
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