Extract and Modify Field in a 32-bit Register

Code

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

#define field_mask (0x1F << 10)

uint32_t update_register(uint32_t reg) {
    // Your logic here
    uint32_t ext = (reg >> 10) & 0x1F; 
    if(ext < 31){
        ext += 1;
    }
    reg &= ~field_mask; 
    reg |= (ext << 10);

    return reg;
}

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

Solving Approach