Compress Interleaved Bits Reverse Bit Spreading

Code

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

uint8_t compress_bits(uint16_t val) {
    uint8_t bit;
    uint8_t reg;
    for(int i=0;i<=7;i++){
        bit=(val>>(2*i))&1;
        bit=bit<<i;
        reg=reg|bit;
    }
    return reg;
   
}

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

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

Solving Approach