Extract and Modify Field in a 32-bit Register

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

uint32_t update_register(uint32_t reg) {
    // Your logic here
    uint8_t tmp = 0x00;
    tmp  = (reg>>10)&0x1f;
    if(tmp<31) tmp++;
    reg = (reg & ~(0x1f<<10)| (tmp<<10));
    return reg;
}

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