Extract and Modify Field in a 32-bit Register

Code

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

uint32_t update_register(uint32_t reg) {
    uint8_t mask = (1 << 5) - 1;
    uint8_t data = (reg >> 10) & mask;
    if (data < 31)
        data++;
    return (reg & ~(mask << 10)) | (data << 10);
}

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

Solving Approach