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) {
    
    if(ctrl->parity_enable == 1 && ctrl->parity_type == 0)
    {   
        int number_parity_1 = 0;
        int temp = data;

        while(temp > 0)
        {
            if(temp & 1)
            {
                number_parity_1++;
            }
        temp = temp >> 1; 
        }
        if(number_parity_1 % 2 == 0){
            data &= ~(1 << 7);
        }else {
           data |= (1<<7);
        }
    } if(ctrl->parity_enable == 1 && ctrl->parity_type == 1) {
        int number_parity_2 = 0;
        int temp_2 = data;
        while(temp_2 > 0)
        {
            if(temp_2 & 1)
            {
                number_parity_2++;
            }
        temp_2 = temp_2 >> 1; 
        }
        if(number_parity_2 % 2 == 0){
            data |= (1<<7);
        }else {
           data &= ~(1<<7);
        }
    }
    if(ctrl->parity_enable == false){

        data &= ~(1 << 7);

    }

    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