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 mask,val;
    mask=(0x1F)<<10;
     val=(reg&mask)>>10;
     if(val<31){
        val=val+1;
        //clearing the bits at the reg field 
        reg=reg&~(mask);
        reg=reg|(val<<10);
     }
    return reg;
}

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

Solving Approach

get the data , compare , increment the value , clear the bits at 10-14 , update the new value 

 

 

 

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Input

15360

Expected Output

16384