Compress Interleaved Bits Reverse Bit Spreading

Code

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

uint8_t compress_bits(uint16_t val) {
    // Your logic here
    // 0101010101010101
    // 00000000
    // 01000000
    uint8_t res = 0;

    uint8_t i = 0;
    while (i < 16) {
        res >>= 1;
        res |= ((val>>i) & 0x1) << 7;
        i += 2;
    }
    return res;
}

int main() {
    uint16_t val;
    scanf("%hu", &val);

    uint8_t result = compress_bits(val);
    printf("%u", result);
    return 0;
}

Solving Approach