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
    uint32_t tmp;
    tmp = (reg>>10)&0x1f;
    if(tmp<31)
        tmp+=1;
    else
        return reg;
    reg = reg&(~(((1<<5)-1)<<10));
    tmp = (tmp<<10)|reg;
    return tmp;
}

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