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 tmp = 0;

    tmp = (reg >> 10U) & 0x1F;

    if (tmp < 31) {
        tmp++;
        reg = reg & 0xFFFFC1FF;
        reg |= tmp << 10U;
    }

    return reg;
}

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