Decode Status Register into Human-Readable Flags

Code

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


#define CHECK_BIT(reg, bit) (((reg) >> (bit)) & 0x1)

void decode_status(uint8_t status_reg) {
    const char *flags[] = {
        "Power On",       
        "Error",          
        "Tx Ready",       
        "Rx Ready",       
        "Overheat",       
        "Undervoltage",   
        "Timeout",        
        "Reserved"        
    };

    for (int bit = 0; bit < 8; bit++) {
        if (CHECK_BIT(status_reg, bit)) {
            printf("%s\n", flags[bit]);
        }
    }
}

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

Solving Approach