Is the Bit Set

#include <stdio.h>
#include <stdint.h>

uint8_t is_bit_set(uint8_t reg, uint8_t pos) {
    int mask=1;
    int copy=reg | mask<<pos;//0000 0100 | 0000 0100 = 0000 0100
    if(reg==copy)
    return 1;
    else return 0;
    // 0000 0100 | 0000 0010 =0000 0110
    // 1111 1111 | 0000 0111 =1111 1111
}

int main() {
    uint8_t reg, pos;
    scanf("%hhu %hhu", &reg, &pos);
    printf("%u", is_bit_set(reg, pos));
    return 0;
}