Extract and Modify Field in a 32-bit Register

Code

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

uint32_t update_register(uint32_t reg) {
    uint8_t field = (reg>>10)&0x1F;
    field += (field!=31);
    uint32_t mask = 0xFFFFFFFF & 0xFFFFF83FF;
    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