Extract and Modify Field in a 32-bit Register

Code

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

uint32_t update_register(uint32_t reg) {
    // Your logic here
    uint32_t field_buff = 0;
 
    field_buff |= (reg >> 10) & ((0x00000001 << 5) - 0x00000001);
    if(field_buff < 31)
    {
        field_buff += 0x00000001;
        reg &= ~(((0x00000001 << 5) - 0x00000001) << 10);
        reg |= field_buff << 10;
        return reg;
    }
    return reg;
}

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

Solving Approach