digits_to_number

atoi_example.c

#include <stdio.h>

int sample_input[] = {1,6,4, 10};
int loc = 0;

int getnumber() {
  return sample_input[loc++];
}

int main() {
  int result = 0;

  int input = getnumber();
  while (input != 10) {
    result = result * 10 + input;
    input = getnumber();
  }
  printf("%d\n", result);
  return 0;
}