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

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

uint32_t update_register(uint32_t reg) {
    uint32_t val=0;
    val=(reg>>10)&((1U<<5)-1);
    if(val<31){
        val=val+1;
        reg=reg&(~(((1U<<5)-1U)<<10));
        reg|=val<<10;
    }

    return reg;
}

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