Simple solution challenge

[r0bp1l]

Similar to a couple others posted:

#include <stdio.h>

int main(int argc, const char * argv)
{
/*‘a’ will be the final unsigned 64-bit int with every other bit turned on. ‘b’ is just another 64-bit unsigned int set to 1, which will be progressively left-shifted by two bits (thirty one times) and each time bitwise-OR compared to ‘a’. */

uint64_t a = 0, b=1;

//For loop progressively left-shifting 'b' by two bits, and each time bitwise-OR comparing with 'a' which is intiialy set to 0;
for (uint64_t i = 0; i<64; i+=2)
{
 a = a | (b << i);
}

printf("%llu", a);

return 0;

}