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 count(uint8_t data){
    uint8_t result = 0;
    for(int i=0; i<7; i++){
        result ^= (data%2);
        data = data>>1;
    }
    return result;
}

uint8_t create_uart_frame(uint8_t data, UART_Control *ctrl) {
    // Your logic here
    if(ctrl->parity_enable == 0){
        return (data&0x7f);
    }
    if(ctrl->parity_type == 0){
        int par = count(data);
        // printf("%d\n", par);
        if (par == 1){
            return (data | 0x80);
        }
        else{
            return data;
        }
    }
    if(ctrl->parity_type == 1){
        int par = count(data);
        if(par==0){
            return (data|0x80);
        }
        else{
            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;
}

Solving Approach