How do I extract bits from 32 bit number

Question

I have do not have much knowledge of C and im stuck with a problem since one of my colleague is on leave.

I have a 32 bit number and i have to extract bits from it.

Answer 1

OK, here's how I wrote it:

#include 
#include 

main() {
    uint32_t in = 0xd7448eab;
    uint16_t out = 0;

    out = in >> 10; // Shift right 10 bits
    out &= 0xffff;  // Only lower 16 bits
    printf("%x\n",out);
}

The in >> 10 shifts the number right 10 bits; the & 0xffff discards all bits except the lower 16 bits.