Extract and Modify Field in a 32-bit Register

Code

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

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

    }
    
    return reg;
}

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

Solving Approach