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

int main(int argc, char **argv) {
  if (argc == 1) {
    printf("Error: expected some-command line parameters\n");
    return 0;
  }

  int i;
  char *longestString = argv[1];

  for (i = 2; i < argc; i++) {
    if (strlen(argv[i]) > strlen(longestString)) {
      longestString = argv[i];
    }
  }

  printf("The longest string from the command line is: %s\n", longestString);

  return 0;
}