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;
int count(int d){
     int c = 0;
     for(int i=0;i<7;i++){
        if(d>>i & 1) c++;
     }
     return c;
     

}
uint8_t create_uart_frame(uint8_t data, UART_Control *ctrl) {
    if(ctrl->parity_enable == 0){
        data &= ~(1<<7);
    }
    else{
        int c= count(data);
        if(ctrl->parity_type == 0){
            if(c%2==0){
                data &= ~(1<<7);
            }
            else{
                data |= (1<<7);
            }
        }
        else{
            if(c%2==0){
                data |= (1<<7);
            }
            else{
                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