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
    uint8_t val_ex = (reg >> 10) & 0x1F;

    if(val_ex < 31)
    {
        val_ex += 1;
    }

    uint32_t mark = ((1<<5)-1) << 10;
    reg &= ~mark;
    reg |= (val_ex & ((1<<5)-1)) << 10;

    return reg;
}

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