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);
    
    uint32_t bitField = (reg & (mask << 10));
    uint32_t value_bitfield = bitField >> 10;
    if(value_bitfield < 31)
    {
        value_bitfield++;
    }
    reg &= ~(mask << 10);
    reg |= ((value_bitfield & mask) << 10);
    return reg;
}

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