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 ones = 0;
    uint8_t temp = data;
    uint8_t parity_bit;

    if(ctrl->parity_enable==0){
        return data;
    }else{
        if(ctrl->parity_type==0){
            // Count number of 1 bits
            for (int i = 0; i < 8; i++) {
                ones += (temp & 1);
                temp >>= 1;
            }
            parity_bit = (ones % 2);
        }else{
            parity_bit = ~(ones % 2);
        }
    }
    return (data & 0x7F) | (parity_bit << 7);
}

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