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
    uint8_t target_field = (reg >> 10) & 0b11111;
    if(target_field < 31) target_field++;
    uint32_t zero_mask = ~(((1 << 5) - 1) << 10);
    return (reg & zero_mask) | (target_field << 10);
}

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

Solving Approach