Extract and Modify Field in a 32-bit Register

Code

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

uint32_t update_register(uint32_t reg) {
    // Your logic here
     // Step 1: Create mask for bits [14:10]
    uint32_t mask = 0x1F << 10;   // 0x1F = 5 bits set (11111), shifted to position 10
    
    // Step 2: Extract field
    uint32_t field = (reg & mask) >> 10;
    
    // Step 3: Increment if less than 31
    if (field < 31) {
        field++;
    }
    
    // Step 4: Clear old field bits
    reg &= ~mask;
    
    // Step 5: Write updated field back
    reg |= (field << 10);
    
    return reg;

}

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

Solving Approach