22. Extract Even Bits Only from 32-bit Register

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

uint32_t extract_even_bits(uint32_t reg) {
    // Your code here
    uint32_t i=0,temp=0,j=0;
    for(int i=0;i<32;i=i+2){
        if(reg&(1U<<i)){
            // j++;
            temp=temp|(1U<<(j++));
        }
    }return temp;
}

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

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