76. Construct UART Data Frame with Parity Bit

#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 parity = 0;
    if(ctrl->parity_enable == 0x0){
        data &= ~(1 << 7);
        return data;
    }

        int count = 0;
        for(int i = 0; i < 8; ++i){
            count += ((data >> i) & 0x1);
        }
        if(ctrl->parity_type == 0){
            parity = count % 2;
        }else{
            parity = (count % 2) ^ 1;
        }
    
    data |= (parity << 7);
    return data;
    return 0;
}

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;
}