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 mask = ((1 << 5) - 1) << 10;
    uint32_t val = (reg & mask) >> 10;
    if(val < 31)
        val++;
    reg &= ~mask;
    reg |= val << 10;
    return reg;
}

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