Extract and Modify Field in a 32-bit Register

Code

#include <stdio.h>
#include <stdint.h>
uint32_t update_register(uint32_t reg) 
{
    uint32_t field = (reg >> 10) & 0x1F;
    if (field < 31) 
    {
        field++;
    } 
    uint32_t mask = ~(0x1F << 10);
    reg &= mask;
    reg |= (field << 10);
    return reg;
}
int main() 
{
    uint32_t reg;
    scanf("%u", &reg);
    uint32_t updated = update_register(reg);
    printf("%u", updated);
    return 0;
}

Solving Approach