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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
    uint8_t value;

    //extract bits 10 to 14
    value = (reg >> 10) & 0x1F;

    //clear bits 10 to 14
    reg   &= ~(0x1F << 10);

    //check extracted value
    if(value < 31)
        value++;

    //update the register
    reg |= value << 10;
    
    return reg;
}

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