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

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