Decode Status Register into Human-Readable Flags

Code

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

void decode_status(uint8_t status_reg) {
    // Your logic here
    for(int current_bit = 0; current_bit < 8; current_bit++){
        // Checks if the current bit is 0, if so, skip
        if(((status_reg & (1<<current_bit)) >> current_bit )== 0) continue;
        
        
        
        // If curren bit is 1, using the current bit position, print out the status
        switch(current_bit){
            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

Checks if the current bit is 1 or 0 and proceeds depending on the result. Skips if it's 0, checks what status if 1.

 

 

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Input

13

Expected Output

Power On Tx Ready Rx Ready