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 mask = 0x0000001F << 10;
    uint32_t eval = reg & (1<<15)-1;
    eval = eval >> 10;
    eval = eval & 0x0000001F;
    if(eval^((1<<5)-1)){
        eval = eval + 1;
        eval = eval << 10;
        reg = reg & ~mask;
        reg = reg | eval;
    }
    return reg;
}

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