Bit Spreading Interleave Bits with Zeros

Code

#include <stdio.h>
#include <stdint.h>
#define BIT_CHECK(r,p) ((val >> p) & 1U )
uint16_t spread_bits(uint8_t val) {
    uint16_t temp = 0;
    for(int i = 0; i<8;i++){
        temp |= ((BIT_CHECK(val,i)) << (2*i));
    }
    return temp;
}

int main() {
    uint8_t val;
    scanf("%hhu", &val);

    uint16_t result = spread_bits(val);
    printf("%u", result);
    return 0;
}

Solving Approach