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Check if the 20th bit of a 32 bit integer is on or off?
if((num & x00001000)==x00001000) Note that the digits represented here are in hex. 0 0 0 0 1 0 0 0 ^ \| x0000 0000 0000 0000 0001 0000 0000 0000 = 32 bits ^ ^ ^ \| \| \| 0th bit 20th bit 32nd bit

Check if the 20th bit of a 32 bit integer is on or off?