9chNumOddPos

#include <stdio.h>

int main() {

    int n = 10;
    int count = 0;
    int res = 0;
    for(int temp=n; temp > 0; temp>>=1) {
    if(count % 2 == 0) {
        res |= (1<<count);
    }
    count++;
}
    printf("%d", (n | res));

    return 0;
}