Replace Bit Field in a 32-bit Register

Code

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


uint32_t replace_field(uint32_t reg, uint32_t val, uint8_t pos, uint8_t len) {
    // Your code here
    for (uint8_t indx =0; indx < len; indx++){
        
        if (0 < (val & (0x01 << indx)))
        {
            reg |= (1 << (pos+indx));
        }else {
            reg &= ~(1 << (pos+indx));
        }
    }
    
    return reg;
}

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

Solving Approach