Construct UART Data Frame with Parity Bit

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

typedef struct {
    uint8_t parity_enable : 1;
    uint8_t parity_type   : 1;
    uint8_t reserved      : 6;
} UART_Control;

uint8_t create_uart_frame(uint8_t data, UART_Control *ctrl) {
    // Your logic here
    uint8_t parity_bit = 0;

    if (ctrl->parity_enable) 
    {
        // Count number of 1s in data
        uint8_t count = 0;
        uint8_t temp = data;
        while (temp) 
        {
            count += temp & 1;
            temp >>= 1;
        }

        if (ctrl->parity_type == 0) 
        {
            // Even parity: parity_bit = 1 if count is odd
            parity_bit = (count % 2 != 0);
        } 
        else 
        {
            // Odd parity: parity_bit = 1 if count is even
            parity_bit = (count % 2 == 0);
        }
    }

    // Shift parity bit to MSB and OR with 7-bit data
    return (parity_bit << 7) | (data & 0x7F);
}

int main() {
    uint8_t data;
    scanf("%hhu", &data);  // 7-bit input

    uint8_t parity_enable, parity_type;
    scanf("%hhu %hhu", &parity_enable, &parity_type);

    UART_Control ctrl;
    ctrl.parity_enable = parity_enable;
    ctrl.parity_type = parity_type;

    uint8_t frame = create_uart_frame(data, &ctrl);
    printf("frame = 0x%02X", frame);

    return 0;
}