26. Extract and Modify Field in a 32-bit Register

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

uint32_t update_register(uint32_t reg) {
    
    uint32_t field_val = (reg >> 10) & (0x1F);

    if(field_val < 31)
    {
        field_val += 1;
    }

    uint32_t clear_mask = ((1 << 5) - 1) << 10;
    reg &= ~clear_mask;

    reg |= (field_val << 10);

    return reg;
}

int main() {
    uint32_t reg;
    scanf("%u", &reg);
    uint32_t updated = update_register(reg);
    printf("%u", updated);
    return 0;
}