Decode Status Register into Human-Readable Flags

Code

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

void decode_status(uint8_t status_reg) {
    for (int i = 0; i < 8; i++) {
        if (status_reg & (1 << i)) {   // Nếu bit i = 1
            switch (i) {
                case 0: printf("Power On\n"); break;
                case 1: printf("Error\n"); break;
                case 2: printf("Tx Ready\n"); break;
                case 3: printf("Rx Ready\n"); break;
                case 4: printf("Overheat\n"); break;
                case 5: printf("Undervoltage\n"); break;
                case 6: printf("Timeout\n"); break;
                case 7: printf("Reserved\n"); break;
            }
        }
    }
}

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

Solving Approach