left rot bits

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

void printBin(uint8_t x) {
  for (int i = sizeof(x) * 8 - 1; i >= 0; i--) {
    printf("%d", 1 & (x >> i));
    if (i % 4 == 0) {
      putchar(' ');
    }
  }
  puts("");
}

int leftRot(uint8_t v, int n) {
  return (v << n) | (v >> (sizeof(v) * 8 - n));
}

int main(void) {
  uint8_t v;
  int n;
  printf("v="); scanf("%hhu", &v);
  printf("n="); scanf("%d", &n);
  printBin(v);
  printBin(leftRot(v, n));
  return 0;
}