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

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

uint32_t update_register(uint32_t reg) {
    uint8_t val = (reg >>10) & 0x1f;
    if(val<31){
    val = val+1;
    reg = ((reg & (~(((1<<5)-1)<<10))) | (val & 0x1f)<<10);
    }
    return reg;
}

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