Construct UART Data Frame with Parity Bit

Code

#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 result = 0;
    if(!ctrl->parity_enable){
        result |= data;
    }
    else
    {
        uint8_t n=data;
        uint8_t count=0;
        while(n){
            count++;
            n = n&(n-1);
        }
        if((ctrl->parity_type && count%2==0) ||
            (!ctrl->parity_type && count%2==1)){
                result = (1<<7)|data;
        }
        else
        {
            result |= data;
        }
    }
    return result;;
}

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;
}

Solving Approach