Extract and Modify Field in a 32-bit Register

Code

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

#define FIELD_MASK 0x1F
#define FIELD_POS 10

uint32_t update_register(uint32_t reg) {
    // Your logic here
    uint32_t field = (reg >> FIELD_POS) & FIELD_MASK;

    if(field < 31){
        field ++;
    }

    reg &= ~(FIELD_MASK << FIELD_POS);
    reg |= (field & FIELD_MASK) << FIELD_POS;

    return reg;
}

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

Solving Approach