21. Replace Bit Field in a 32-bit Register

#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
    uint32_t bit_mask = 1;
    bit_mask = bit_mask << pos;
    for(uint8_t i = 0; i < len ; i++)
    {
        reg &= (~bit_mask);
        bit_mask = bit_mask << 1;
    }
    reg |= (val << pos);
    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;
}<\/code><\/pre>Solving Approach<\/strong><\/h2>&#160;<\/p>&#160;<\/p>&#160;<\/p>"}