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 cnt = 0,check = 0;
    data &= 0x7F;
    if(ctrl->parity_enable){
        check = data;
        while(check){
            check &= (check-1);
            cnt++; 
        }
        if (ctrl->parity_type && cnt %2 == 0){

            data |= (1 << 7);
            
        }
        if (!ctrl->parity_type && cnt %2 != 0){
            
            data |= (1 << 7);
            
        }else{
            data &= (~0U >> 1);
        }
        return data;
    }
    data &= (~0U >> 1);
    return data;
}

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