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
    //Parity enabled
    uint8_t count = 0;
    if(!ctrl->parity_enable){
        return data;
    }
    else{
        for(int i = 0; i<7; i++){
            if((data >> i) & 0x1){
                count+=1;//count number of bits
            }
        }
        if(ctrl->parity_type){//odd parity type
            if(count % 2 == 0){//even
                data = data | (0x1<<7);
            }
        }
        else//even parity type
        {
            if(count % 2 != 0){//odd
                data = data | (0x1<<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;
}