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

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

#define EXTRACT_5(reg,extr_bits)  (extr_bits = (reg>>10) & 0x1f)
#define UPDATE(reg,bits) {reg &= ~(((1<<5)-1)<<10); reg |= (bits<<10);}

uint32_t update_register(uint32_t reg) {
    // Your logic here
    uint32_t bits;
    EXTRACT_5(reg,bits);
    bits = (bits != 31) ? (bits + 1) : bits;
    UPDATE(reg,bits)
    return reg;
}

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