Extract and Modify Field in a 32-bit Register

Code

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

uint32_t update_register(uint32_t reg) {
    // Your logic here
    // uint32_t result = 0;
    uint8_t mask = 0x1F;
    uint8_t new_value = ( ( reg >> 10 ) & mask );
    if ( ( new_value & ~31 ) == 0 && (new_value ^ 31)) {
        reg &= ~(mask << 10);
        reg |= ( ( ( new_value + 1 ) & mask ) << 10);
    }
    return reg;
}

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

Solving Approach