Compress Interleaved Bits Reverse Bit Spreading

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

uint8_t compress_bits(uint16_t val) {
    uint8_t a=0;
    uint16_t b=0,c=0;
    for(int i=0;i < 16;i += 2){      
        b |= ((val >> i) & 1) << c;
          c++;   
     }    // Your logic here
    return b;
}

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

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