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 frame;
    int cnt=0;
    uint8_t num;
    frame=data&0x7f;
    num=frame;
    if(ctrl->parity_enable==0)
    {
        return frame;
    }
    else
    {
        while(num)
        {
            cnt++;
            num&=(num-1);
        }
        if(ctrl->parity_type==0)
        {

            if(cnt%2!=0)
            {
                frame|=1<<7;
            }
        }
        else
        {
            if(cnt%2==0)
            {
                frame|=1<<7;
            }

        }

    }
    return frame;

}

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