Decode Status Register into Human-Readable Flags

Code

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

void decodeStatus(uint8_t status_reg) {

    // Lookup table for flag names
    const char* flags[8] = {
        "Power On",
        "Error",
        "Tx Ready",
        "Rx Ready",
        "Overheat",
        "Undervoltage",
        "Timeout",
        "Reserved"
    };

    // Scan from bit 0 (LSB) to bit 7 (MSB)
    for (int bit = 0; bit < 8; bit++) {
        if (status_reg & (1u << bit)) {
            printf("%s\n", flags[bit]);
        }
    }
}

int main() {
    uint8_t reg;
    scanf("%hhu", &reg);

    decodeStatus(reg);

    return 0;
}

Solving Approach