Decode Status Register into Human-Readable Flags

Bit Shifting Approach 

Code

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

// Array to bit mapping
const char* statusreg_flags[8] = {
    "Power On",      // Bit 0
    "Error",         // Bit 1
    "Tx Ready",      // Bit 2
    "Rx Ready",      // Bit 3
    "Overheat",      // Bit 4
    "Undervoltage",  // Bit 5
    "Timeout",       // Bit 6
    "Reserved"       // Bit 7
};

void decode_status(uint8_t status_reg) {
    for(uint8_t i = 0; i < 8; i++){
        //Right Shift the bit and check which bits are set
        if((status_reg  >> i) & 0x01) printf("%s\n",statusreg_flags[i]);
    }
}

int main() {
    uint8_t reg;
    scanf("%hhu", &reg);
    decode_status(reg);
    return 0;
}