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

    // Extract target 5-bit field
    uint32_t val = (reg >> 10) & (0x1f); 
    if (val < 31) {
        val = val + 1;
    }
    
    // Write updated value back to register in same position
    reg &= ~(0x1f << 10);
    reg |= (val & 0x1f) << 10;

    return reg;
}

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