26. Extract and Modify Field in a 32-bit Register

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

uint32_t update_register(uint32_t reg) {
    // Your logic here
    #define FIELD_MASK      (0x1F << 10)

    uint32_t FIELD_VAL = ((reg >> 10)  & 0x1F);

    if(FIELD_VAL < 31)FIELD_VAL +=1;

    reg &= ~FIELD_MASK;
    reg |= (FIELD_VAL << 10);

    return reg;
}

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