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

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

uint32_t update_register(uint32_t reg) {
    uint8_t field = uint8_t((reg >> 10) & (0x1F));
    reg = reg & ~(((1 << 5) - 1) << 10);
    if(field < 31 ){
        field++;
    }
    reg = reg | (uint32_t(field<<10));
    return reg;
    
}

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