71. Decode ADC Result Using Union Bitfields

#include <stdio.h>
#include <stdint.h>

typedef union {
    struct {
        uint16_t adc_value : 12;
        uint16_t channel   : 4;
    };
    uint16_t adc_reg;
} ADC_Result;

int main() {
    uint16_t reg;
    scanf("%hx", &reg);
    ADC_Result res ; 
    res.adc_reg = reg ; 
    printf("Channel: %d\n" , res.channel) ; 
    printf("ADC Value: %d" , res.adc_value) ; 

    return 0;
}