Extract a Bit Field from a 32-bit Register

Code

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

uint32_t extract_field(uint32_t reg, uint8_t pos, uint8_t len) {
    // Your code here

    uint32_t extractPoisition = 0;

    for( int idx = 0 ; idx < len ; idx++ )
    {
        extractPoisition = extractPoisition | ( 1 << (pos + idx));
    }

    reg = (reg & extractPoisition) >> pos;

    return reg;
    
}

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;
}

Solving Approach