Decode Status Register into Human-Readable Flags

Code

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

#define STATUS_POWER_ON     (1 << 0)
#define STATUS_ERROR        (1 << 1)
#define STATUS_TX_READY     (1 << 2)
#define STATUS_RX_READY     (1 << 3)
#define STATUS_OVERHEAT     (1 << 4)
#define STATUS_UNDERVOLTAGE (1 << 5)
#define STATUS_TIMEOUT      (1 << 6)
#define STATUS_RESERVED     (1 << 7)

void decode_status(uint8_t status_reg) {
    if (status_reg & STATUS_POWER_ON) { printf("Power On\n"); }
    if (status_reg & STATUS_ERROR) { printf("Error\n"); }
    if (status_reg & STATUS_TX_READY) { printf("Tx Ready\n"); }
    if (status_reg & STATUS_RX_READY) { printf("Rx Ready\n"); }
    if (status_reg & STATUS_OVERHEAT) { printf("Overheat\n"); }
    if (status_reg & STATUS_UNDERVOLTAGE) { printf("Undervoltage\n"); }
    if (status_reg & STATUS_TIMEOUT) { printf("Timeout\n"); }
    if (status_reg & STATUS_RESERVED) { printf("Reserved\n"); }

}

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

Solving Approach