Transfer printf to some variable

Question

i have transfered elements of array to printf that string/bits which I need to transfer to some variable, because i need to work then with this text/string ( 01000001 ) and convert it to char (bits => char).

//main
bool bits2[8] = {0,1,0,0,0,0,0,1};
printf("%c\n", decode_byte(bits2));

//function
char decode_byte(const bool bits[8]){
  int i;

  for (i=0; i<8; i++){
    printf("%d", bits[i]);
  }
  
  
  return 0;
}

Answer 1

Are you looking for this?

#include <stdio.h>

int main() {
  bool bits2[8] = { 0,1,0,0,0,0,0,1 };
  unsigned char c = 0;

  for (int i = 0; i < 8; i++)
  {
    c <<= 1;
    c |= bits2[i];
  }

  printf("%02x\n", c);
}