26. Extract and Modify Field in a 32-bit Register

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

uint32_t update_register(uint32_t reg) {
    // Your logic here
    uint32_t newreg = reg;
    uint32_t mask = 31 << 10;
    uint32_t val = (reg & mask) >> 10;
    if (val < 31){
        val += 1;
        // we need to clear bits in postions 10 to 14 first of all
        newreg = newreg & ~(((1U << 5) - 1) << 10);
        newreg = newreg | (val << 10);
    }
    return newreg;
}

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