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
    uint32_t m = ((1U << 5) - 1);
    uint32_t x = ((reg >> 10) & m) < 31 ? 
                (reg & ~(m << 10) | ((((reg >> 10) & m) + 1) << 10)) : reg;
    return x;
}

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

Solving Approach

 

 

 

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Input

15360

Expected Output

16384