Extract and Modify Field in a 32-bit Register

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

uint32_t update_register(uint32_t reg) {
    uint32_t field=0;
    field=  ( reg & (0x1f<<10)) >>10 ; //shiftez ca sa fiu pe primele pozitii
    if(field<31)
    field=field+1;
    reg=reg &( ~(0x1f<<10));
    return reg=reg | (field<<10);

}

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