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 val;
    val = (reg >> 10) & 0x1F;
    if(val < 31){
        val +=1;
        reg = (reg &~ (0x1F << 10)) | ((val & 0x1F) << 10);
    }
    else{
        reg = (reg &~ (0x1F << 10)) | ((val & 0x1F) << 10);
    }
    return reg;
}

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