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How do I get a bit from an integer value in C?

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YasminRadwan26

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2022-06-25

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How do I get a bit from an integer value in C?

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YasminRadwan26

2022-06-25

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To get the ith bit, perform Anding operation between the ith bit and 1 (1 << i) after that shift the result ith position in right using the right operation.

#include <stdio.h>
//Macro to Get bit from the given position
#define GET_BITS(data, pos) ((data & ( 1 << pos)) >> pos)
int main()
{
    unsigned char value = 16; //value in hex 00010000
    unsigned char position = 1;
    printf("%d\n", GET_BITS(value,position)); //print gets value from the 1th position
    position = 4;
    printf("%d\n", GET_BITS(value,position)); //print gets value from 3rd position
    return 0;
}

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