#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main(int argc, char ** argv) {
  // 1. Obtain number of strings.
  if (argc != 2) {
    printf("Expected one integer argument.\n");
    return -1;
  }

  int n;
  if (sscanf(argv[1], "%d", &n) != 1 || n <= 0) {
    printf("Expected a positive integer.\n");
    return -1;
  }

  // 2. Read n strings.
  // Array of char *'s to hold strings.
  char ** strings = (char **) malloc(n * sizeof(char *));
  // Temporary buffer.
  char buf[128];

  int i;
  for (i = 0; i < n; ++i) {
    // 2a. Scan for each string.
    if (scanf("%127s", buf) == EOF) {
      printf("Unexpected end of input.\n");
      return -1;
    }
    // 2b. Allocate space to hold string permanently.
    // Notice the extra byte to hold the string terminator.
    strings[i] = (char *) malloc(strlen(buf) + 1);
    // 2c. Copy string from buffer to its space.
    strcpy(strings[i], buf);
  }

  // 3. Do something with strings.  In this case, print.
  for (i = 0; i < n; ++i)
    printf("%s\n", strings[i]);

  // 4. Free allocated memory.
  for (i = 0; i < n; ++i)
    free(strings[i]);
  free(strings);

  return 0;
}