Decode Status Register into Human-Readable Flags

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

#define IS_SET(reg, pos) ((1<<(pos) & (reg)) ? 1 : 0)

static char* flag_names[] = {
    "Power On",
    "Error",
    "Tx Ready",
    "Rx Ready",
    "Overheat",
    "Undervoltage",
    "Timeout",
    "Reserved"
};

void decode_status(uint8_t status_reg) {
    for (int pos = 0; pos < 8; pos++) {
        if (IS_SET(status_reg, pos)) {
            printf("%s\n", flag_names[pos]);
        }
    }
}

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

Solving Approach