19. Extract a Bit Field from a 32-bit Register

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

uint32_t extract_field(uint32_t reg, uint8_t pos, uint8_t len) {
    // Your code here
    uint32_t reg1=0x00;;
    reg = reg >> pos;
    for(uint8_t i=0; i<len; i++){
        if((reg>>i)&1){
            reg1 |= (1<<i);
        }
    }

    return reg1;
}

int main() {
    uint32_t reg;
    uint8_t pos, len;
    scanf("%u %hhu %hhu", &reg, &pos, &len);
    printf("%u", extract_field(reg, pos, len));
    return 0;
}